2006-08 Chevy Cobalt Transmission Control Module FIX - UPDATED*
ฝัง
- เผยแพร่เมื่อ 6 ม.ค. 2025
- Power Steering MSG, No shift out of 1st Gear, Faulty Speedometer, etc.
Hey guys back in town for an update video just to help deliver the facts and show this fix is still working properly. Thanks for watching!
If this fixed your problem please consider joining my Membership Program! It goes a long way!:
/ @zachctyler
Hardware needed:
(2) 1/4 inch nut
(1) 1/4 inch screw
(1) #12 gauge ground wire/automobile wire [roughly 3 ft]
(3) Crimp wire connectors
Extra tools/hardware may be required
Watched the video, listened, read reviews, didnt really think this would work..I appreciate the fact that it did. Thank you Tracer for posting this! Thumbs up to you!
Hey guys, I just bought a 09 Cobalt from an auto auction with only 104K miles on it. As is in most auctions, you could look at it and start it, but you couldn't drive it before you bought it. Anyways after driving out of the auction yard, I got the dreaded "Power Steering" message on the dash, hard transmission shifting and no speedometer. I got the car home and started researching online what the problem could be. I ran across the videos of there "fixes" and was very excited. I tried it out and it did not help at all. I tried over and over with a wire brush, thinking that I just was not getting a good ground. Nothing helped. I got discouraged and did more research and found videos showing a problem with communication between the modules. I purchased a scanner from Walmart for $50, not just a code reader an actual scanner that used bluetooth to my phone to display all the real time data from the engine and components.
The data said that I was not getting a signal from the output speed sensor on the transmission. After finding this (bottom of the engine on the back side by the firewall on the passenger side) I replaced the sensor as it was easy to get to from underneath the car and inexpensive ($20). After replacing the sensor I started and tried out the car with high hopes.... Nope, still malfunctioning. I scanned the car again and received the excact same data. I tried unsuccessfully to find a wiring diagram to see where the wires go that come from the sensor so I could test them to ensure they didn't have a short in them. Since I couldn't find anything online, I went outside to trace them (34 degrees outside). As I was tracing them, I noticed the plastic covering almost looked melted and very brittle. I saw a spot with a hole through it and didn't see any wires in there. Upon examining it closer, both wires (purple and yellow) were completely broken. I replaced the wires and hooked everything back up. I felt good about the fix so I tried it out, bingo !!! The car operated normally (for the first time).
I wanted to see if I needed the "fix" ground wire to the TCM. I disconnected it and the car still runs perfect. So, If you try this "fix" and it does not work for you, checking the wiring on the Transmission Output Speed Sensor would be a good idea. Wanted to share my experience so that hopefully it can help someone else as it was a two week nightmare thinking I wasted $1900 on a piece of junk.
There is a place on the oil filter housing that has a sharp edge. It easily cuts through the sheathing and sometimes the wires. This can cause a variety of problems.
Where did you purchase the wires from? I am having the same problem and I think it is the wires as well.
I have the same problem i just bought one from the auction today 05 cobalt thanks a lot I hope this works
Preet1989 Singh did it work?
Thank you, fixed my transmission not shifting and speedometer not working. It was the purple and yellow wire were cut. Spliced them together and worked.
Thanks so very much for this tutorial. I was at my wits end trying to figure out what the problem was. I watched videos upon videos and gave each solution a try. After replacing Throttle Body, Spark Plugs, and Speed Sensor, I started getting different codes on the my code reader. That's when I changed tactics. There's a short somewhere and I just had to find it. Luckily, it was the wiring to the Speed Sensor. Got those two patched up and did the TCM ground mod. After resetting the computer and all, the car is running fine with no issues at all. BEFORE ATTEMPTING TO DO ANYTHING WITH THE ELECTRONICS IN YOUR VEHICLE, MAKE SURE TO DISCONNECT THE BATTERY FIRST. Yes I know, most people already knows this. This is for those that tend to forget. Yes, I were one of those people. Hope this helps anyone with the same issue that I've had.
This fix only cost me $6.18 04/18/2022. I didnt use the loop on both sides of the screw as it seemed redundant, however I used the 1/4 inch bolt and wire connector and attached it to the strut. BAM!! worked like a charm, I can't thank you enough for sharing this video. The car is running perfectly.
You’re welcome
I'm going to try this now
@@zachctyler did you have the issue of the shifter locking after
@@Wyte_Boy_Kannabis
Did you resolve the shifter locking up on you, Gavin?
@@ElSteve-ORadioTM yes I did it just took the computer a second to read
Just a heads-up to everyone the tcm ground goes to the front of the transmission and if you fix that ground you don't have to rig it with random wires
how do you do this
@@drewfilms1204 yeah. How?
Interested to know too
Please make a video
@@Yeeyeeepeterskiii I did check my channel
My dad just came over so i can check out his trans and google search brought me over to this video, I installed a grounds to the trans ecm. I Clear all my codes took it for a drive and no more issues, fuel level, power steering, stuck in first gear, no rpm on tach all not working properly till I installed the ground.
just finished replacing the exhaust from the resonator back. put car on the ground and had all of these symptoms. came across this and couldn't believe it worked. thanks
Thanks for the post man! Just did this last week and just drove the car again today and it's still going good like back to normal. It started two weeks ago with my 07' Cobalt ironically when I was on the way to my mechanic to get something else done. I had him put in a new battery hoping it might help after things I've read online but he couldn't figure out what the problem was and he could only tell me it was a communication problem with the tcm. When I picked the car up the next day I drove it home about 3 miles and it was fine no issues. The next day I drove it and power steering message came up gauges going crazy and bad shifting and check engine light on. Anyhow this is working so far. Thank god! My question is how long has this fix worked for you or anyone else? Has it been a permanent fix? Thanks again!
I have an '08 G6 that I picked up cheap. It seems to have the hard-to-find grounding issue that causes intermittent traction control to turn off. Recently the transmission will intermittently have issues deciding on a gear. I'm off to Walmart to do this fix!
I did this fix works great, but I would like to add there is a ground wire connection on the drivers side of the back of the engine it has about 4 to 5 ground wires going into a terminal and it gets corroded and even burns the wires and melts the plastic coating on the wires and doesn't make a good connection, remove the wires from the terminal clean them up and maybe even replace the terminal and it will make a better ground.
@Robert Csapo sorry I don't, sold the car last year.
what's the point of the additional wire in a loop?
grounding the module to the chassis I get but that loop would do nothing additional.
what is your explanation for that additional wire?
@@zachctyler im gonna try this tomorrow cause i helped a random guy today jump his car off and right when i got done doing it my car started acting up and the power sterring light came on and my speedometer wont move and the rpm on the car is high and wont shift gears either so im hoping this works cause i dont have money to get a new car right now and im praying this works. it should work right.
Eric Hamilton did it work ? Or did jumping the car fry the alternator ? Hope it fixed it. Thank u
I do not understand why is there a ground wire going from the front to the back of the TCM ? Isn't it useless since it is all the same metal piece? Will try the fix later and post back if it fixed the problem.
Not needed
every transmission on the planet has this is called limp mode. More than likely the fluid hasnt been changed and the filter is clogged if you look on here there are a ton of videos explaining just that. If the fluid is at its proper level and is clean than could be the pressure solenoid. Anythine a car has issues all the fluids should be cked if they are low fill them dirty change them. Than ck all fuses and electrical connections doesnt cost anything to ck. Half the cars issues can be prevented by doing this prevented maintenance.
FOR THE PPL THIS DOESN'T WORK FOR. My mother bought a cobalt had the same issues I added a Ground and still had a communication tcm issue! We sent the car to a bunch of shops and got crazy quotes and crazy diagnosis finally we sent it to a place that specializes in electronic stuff like radios and remote starters they even wire the local police cars. Anyway they had to add one of the positive feed wires that are on the tcm they charged us 75$ to fix it and it solved all these problems I'm not sure what wires but if anyone has questions message me i can send pics of what they did. THEY DID ALSO ADD A GROUND LIKE THIS.
I would be really great-full if you could send me the pictures of what they did I’m still dealing with the TC message on the dash board and nothing shows when they scanned my cars computer
Lily.torres86@gmail.com
Thanks !!!
I have pictures but idk how to post them on this lmao. theres a light red/white wire that comes into the tcm plug u gota tap into that wire and jump it to the light red/white wire thats on the plug on the right of the ecu plug. If your looking under the hood, the tcm is on the roght just under it is 2 more plugs on the ecu.
I emailed you the pictures
Nick Hopkins thank you !!!!
@@lilianatorresgarcia8825 no problem!! I hope it works for you.. add a ground like they did in this video too
my Chevy colbalt is having the same issue. tried the grounding technic and it worked fine for a couple days and then right back to the same problem. why has there been zero recalls for this issue considering it is a safety hazard, and for those that take the vehicles back to the dealership they can not figure out what's wrong with it.
It is simply a corroded ground. Either clean the ground or use a jumper to a good ground point.
The problem is caused by atmospheric conditions.
Clean and upgrade all grounds, one going under coolant reservoir, and especially one on the same side of engine, behind radiator fans the ground to transmission solenoid or pressure switch clean and or upgrade
do you have the link of the video showing the transmission electrical lines that were chafing
Thanks for the info! Question, can I just get any old wire around the house, cut the tips then do this?
As long as its copper wire should be fine.
Works awesome just did this to my daughters 2008 Chevy cobalt. We bought new tcm and took to dealer. After 133.00 and still no idea we told them to stop. They said they checked all wires to ground and was good. We put old tcm and did ground wire like this. Bingo everything works. Obviously there's a bad wire somewhere. Dumb dealership. Hope this works for a while. Thank you for posting video sure helped us.
Vickie Lecker I just ran into TCM problems today after replacing an exhaust gasket, the donut gasket as my friend referred to it. it was the one right off the heads, three bolts holding the exhaust in place. While wrenching on one of the lower bolts closest to the passenger side I was really close to some wiring dropping down the back of the motor which plugs into the transmission, two wires yellow and purple color. My Cobalt now has 120k miles and I live in Phoenix, Arizona so it gets hot under the hood. The cover for these two wires was so dried out that it had fallen apart. These two wires in my case are now exposed to the heat and have become very brittle. I noticed tonight after driving the car didn't want to shift, power steering message, and all trip info and avg mpg and avg mph now blank. Inspecting these two wires since that was the only thing I had unplugged, one wire has split and I can now see exposed copper. I plan on repairing the damaged portion of the wires for now as a temporary fix, disconnecting the battery and reconnecting the battery to reset the computer which will bring back my trips, avg mpg, avg mph and hopefully replacing these wires will get my speedometer working again. After straightening the wire where it had cracked and making a connection the car did shift out of 1st into 2nd, 3rd, 4th, and 5th but the shift was very hard and I was greeted with the power steering message as soon as it shifted out of 1st into 2nd for the first time.
I suggest looking into these two wires on your daughter's Cobalt which may be causing a short. It sounds like you said you were able to use the original TCM by trying this "fix" shown in this video. I believe replacing these two wires will solve the problem without having to "Mickey Mouse" the car with what seems to me a dodgy fix.
Matt Armstrong Hi! Same issues as everyone else: Power steering signal, blank odometer & transmission not shifting past 2nd gear..... Which wires should i check? thanks!
Thank you! Well don't gotta worry about this wire Issue but it did work for a couple weeks. She hit a deer and cars totaled.
omg thank you! genius!! it worked . super easy and I'm a female who knows nothing about cars! I did this alone
My 08 pontiac g5 just started this when i left my garage gauges all over the place transmission shifting like shit then the gauges were ok but tranny was still acting up so i turned around back to garage and attached a ground wire to the specified hole and ground spot and its back to normal. I hate garages and like to fix things on my own and this worked thanks for the video buddy
This worked for me too. Traction control light was on, power steering warning was on, speedometer didn’t work, and most importantly it wouldn’t shift into the higher gears. Thanks.
So the problem is the ground wire harness. There are four wires joined together and attached to the transmission. Stand in front of the car. Remove the plastic cover. Look to the right of the dipstick, under the radiator hose. Remove and replace with a new end.
my friend carlos had this same problem he followed this trick and it worked....... happy man at last thanks for your posting.
Just curious why did you loop a wire to touch front and back it looks like your just grounding the tcm couldnt you just use the 1 wire with 2 eyelets crimped on
This did not work for me im having all the same problems and even when i run the obd it said no communication with tcm so I purchased a new one and still no fix then proceed to ground the new one and still no fix you have any other idea of what it might be?
Ground on the transmission under the tcm
Before you fix the problem the the steering wheel feel like it’s lock ? Because my 06 cobalt doing the same thing
January 3th 2021.. just got done and it absolutely worked.. my speedometer wasnt working.. car wouldn't shift out of first... I used 12 gauge wire.. I didnt use connectors I spliced it with long splices and tied and clamped it.. but it absolutely worked... 💯💯💯
You turned off driving, the speedometer went down, with a low fuel legend and hydraulic steering on the dash, if there is zero start, how did you solve it? help me, friend
Would this work on an '05? I have all the same symptoms.
I did this with my 2005 Cobalt along with rewiring corroded wires. for like 2 months and does it again... any idea on what to do additionally?
Do you know any amazing tricks and tips like this to fix a ignition control module on a Chevy suburban
I do not sorry
I tried this and worked for couple minutes now it's back to doing the same thing
Same
Just replace another engine , after putting back the new engine started having this problem . Thanks to you I just fix the problem . Thanks for your help. A simple ground wiring fix the problem Pronto.
Is your car still running after do to this "fix"? I have the same problem but I just want to know if this can be a permanent fix
Thanks
Thanks so much for your video. I just successfully applied this fix to my 2007 Cobalt. The Power Steering light went out, the speedometer is working again, the transmission shifts great and the check engine light went out. However the check engine light came back on about a mile into my test drive and stayed on. Still, everything else seems to be working fine. I wonder if I need to just reset the check engine light. Any ideas?
Glad it helped
Have someone clear that code with an OBD 2 scanner. That will shut it off.
Hi. I tried your first version because I had all those symptoms and codes. The codes are gone but I still don’t shift gears and speedometer still doesn’t work. Should I do the double wire? Do you think that is the problem? Thanks!!!
Make sure you have a good grounding point. If there is rust and not a good bond metal to metal then it won't work. Im not sure if this doesn't fix, thanks for comment!
Good video! My wife called me this morning and described the problem she was having after just leaving. The cruise dropped out and messages were flashing for steering problems etc. Shifting didn't seem to be affected. She has a 2006 Malibu Maxx. I told her to turn around and head home. I cleaned the ground terminals by the strut tower and on the frame in front of the battery and sprayed them with battery terminal protection. It road tested great so I sent her on her way. I'll ground the BCM when she gets back. But, I got a good continuity reading so I'm pretty confident it was the bad ground on the strut tower.
Did you have to reset the memory by disconnecting/reconnecting the batt in order to remove the check engine light?
I just tried this without any luck, engine light is still on. Suggestions?
Edit: I drove around for about 30 mins and it's shifting great, no stall out's when breaking or hard breaking and zero idle surging, but the engine light remains.
tracker fiend engine light will reset itself manually after I believe something like 140 drive cycles.. Depending on the code it set. That's starting the car from cold, letting it reach operating temp, then shutting off... You're better off going to autozone or disconnecting the battery. You could also just pull the fuses for thirty seconds if you don't want to get dirty
(Metallica)
🤘🎶BUT THE MEMORY REMAIINS!!🎶🤘
My Cobalt ss 2005 is having this problem I tried the wire an bolt an nut from your first video but nothing works I need help
Hey man, really appreciate both your videos on this problem. I just bought a 07 chevy cobalt and the check engine light came on today with no other symptoms. Took it to Autozone and did a scan, TCM code came up. I was wondering after this fix, was your check engine light able to turn off or will it stay on forever? Thanks again for your video man.
Follow this. I’m also wondering this
Just curious if it would work for a 2007 cobalt 2.4 L manual transmission that grinds when you put it into third and you pull it out of third other than that it shifts fine
Dwayne Fehr That my friend sounds like a synchro going out for 3rd gear.
have you had any problems with a lean code bank 1 for emmitions?
MYSTERY %$#&**%$ SOLVED!!
Cobalt owners with following symptoms: while driving, the dreaded “ding ding” sound followed by security light coming on dash, gauges go wonky (speedo, fuel and rpms bounce to zero and back) Power Steering light may come on, sometimes jerky auto transmission shifting, sometimes loss of Power Steering and/or car going into Limp Mode.
My daughter has had her 2008 Cobalt Coupe for less than a year, we bought it used with about 110K miles on it. I have been troubleshooting trying to fix this issue since around the time she got it, like many of you, to no avail. I have spent hours researching on the internet (thank you to all of you Cobalt Warriors who have been hounding this too, with all your great info) as well as inspecting, cleaning contacts, looking for possible reasons for an electrical short - as many have found the fault codes almost always show loss of communication codes, but are unable to find the problem.
This may not be the only reason this happens, but I’m fairly certain this is why it was happening to my daughter’s car. Please check the following on your car to see if it has the same thing:
1) Inspect Oil Pressure Sending Unit for oily residue on outside (I know, you’re saying “what? why?”)
2) Inspect Connectors to modules, lower PCM especially, but TCM and upper PCM too, for any brownish oil residue on connectors or on the modules themselves - where pins are and around inside edges of modules, right where the connectors attach.
I believe what is happening, and bear with me…is that the Engine Oil Pressure Sensor begins to leak (fail)…and then oil from your engine is expelled under very light pressure out the Engine Oil Pressure Sensor …where it doesn’t fall below by gravity like you would expect…it travels like an alien species along the sensor wire and wire harness, even uphill, and around harness bends, until it makes its way to the module…in my case, the PCM. I believe it is the oil in the connectors making contact with the pins or the module itself to create an intermittent and temporary short, which makes you experience all the crazy Cobalt symptoms described above.
I finally came across the solution after Googling “oil in PCM”, and found other people who found oil in their PCM…These cars were not Cobalts or even GM cars, which one would normally discount as not being applicable. But if you read their threads below, you will see that they maintain that oil can travel from a leaking Engine Oil Pressure Sensor or a leaking Power Steering sensor, along harness wires to reach the PCM…they have similar experiences with the their cars’ gauges going haywire and transmissions not working correctly. See these threads:
Dodge Neon: Read Moderator Chris Barrett’s solution (he also noted it usually happens with weather proof (sealed) connectors..Maybe it is the suction created by the end connector seal to cause the oil to run along the wire:
forums.neons.org/viewtopic.php?t=245507
Dodge Durango: read Getpaidct solution (albeit due to Power Steering sensor, but must use same technology):
dodgeforum.com/forum/2nd-gen-neon/299939-oil-liquid-in-pcm-connector.html
Note: If your Engine Oil Pressure Sensor looks suspect and is oily, you may not yet notice any oil in the PCM module, connector area…I didn’t the first time I inspected it…I originally cleaned the connector and module/pins with CRC electrical contact cleaner spray, which seemed to help the problem go away for a few months. But the second time I inspected the connection, there was oil in there…I couldn’t figure out how oil was getting in there, as the contact spray should have completely evaporated, and it was just a wire harness ending with a plastic connector (with female connectors for pins) and the module, which was sealed in aluminum, with just copper pins sticking out of the module.
TO FIX: disconnect positive and negative battery terminals. Replace leaking Engine Oil Pressure Sensor, located on the engine block, down low, facing the right center of the front bumper (car needs to be raised to gain access from below) . Remove PCM and TCM module connectors. Remove outer black plastic cover of connectors. Generously spray harness wires near connector and both sides of connectors, where wires go into connector and the outer female leads with Isopropyl alcohol, something to cut through and clean off the oil. Use compressed air to blow out any remaining alcohol from both sides of the connector. Also clean pins and connector area on modules the same way. When confident everything is completely dry, re-attach connectors to modules. Before connecting battery, touch both negative and positive battery leads together for at least 15 seconds, to clear any residual stored codes. Re-attach positive battery lead, then negative lead. Hopefully your Cobalt electric gremlin has been exorcised forever, like mine!
If this is not the answer for your Cobalt troubles, check for possible wire breaks on the G105 ground bolted on the outer transmission, which is located on the top side of the transmission facing the front bumper. There was a moderator on CarGurus who found a stress break on his G105 grounded wires, which was causing the same symptoms and was resolved when the grounded wires were fixed appropriately. The picture of his ground did not include a larger ground strap, which my daughter’s car had, that looks original. My guess is that GM added the extra strap to the 2008 model, after finding the weakness or stress failure of the ground in the 2007 and earlier models. Some Cobalt owners have said their troubles were fixed after the dealer found a break in a wire underneath the car, and I’m guessing this is where it was, as I was not able to find any other possible wires to check, outside of the wires going through the firewall to the engine compartment.
Also, one of the first things I did, and still have, was to ground the TCM to the car body left strut, like many people have recommended, although it didn’t solve my problems like it did for others. My daughter’s car also had the ignition recall fix, the power steering motor recall fix, and then we had the Power Steering module/column replaced, which the dealer said was the problem for all the above symptoms, but it fixed it for only a few days before returning. I spent a good 4 hours troubleshooting after it started acting up again and I finally got this solution!!
does it have to be 12 gauge wire?
Hi Lately Inspired, My car just started with this problem 2 weeks ago. I called the electric, the mechanic and they can't fix the problem. My car does not turn on, it shows ''power steering on the board'' , could you tell me what is the procedure is to do after connecting the ground wire. I appreciate your support. Best regards
What issues were you having before you did this? Was your traction control light coming on? And this solution last for you?
I put a new one in my 06 I’m SS, took it for a test drive and I couldn’t put the car in reverse, any idea why I can’t go into reverse?
No idea
Dude, You are the man!! I appreciate you taking the time to make that video!
My cobalt won’t shift out of first this should you think?
Thanks for both your previous video and this one. Since I'm not sure which control module is the source of my problem, I doubled down and grounded both control modules in that area to the chassis ground. More precisely, I connected the TCM to the ECM and the ECM to the chassis ground. It started and no codes; haven't driven it yet to see if the problem goes away (or if I made things worse). Stupid Cobalt...
Having only one of the issues from this problem, the car isn't wanting to shift out of first. I haven't noticed anything else about it other than that.
Do you think that this would be a fix for that?
Thank you for this video all these years later and that worked for my daughters mom cobalt I just fixed it, it was doinf the same thing
I tried doing this and my cobalt shuts right off what would cause it to shut off?
hi, I have a Suzuki xl7 2009 with code P0700. Do you know where the TCM is located?? I can not find any video on youtube about it. Please respond if you know?? Thanks a lot.....
My Chevy won't go in reverse do you thin this will work for it
when you hook up the 3/4 bolt Is it suppose to spark? can you go threw the step like I'm I suppose to remove the neg thermal on the battery first then attempt to connect it. did you thread the bolt going through if so will it harm the bcm by chance
It's always a good precaution to unhook the battery ground when working on the electrical circuits. I always make sure I ground control modules and the like with a wire and alligator clips so that you minimize the risk of a surge when working on them. The fact that you saw sparks is proof that your module was poorly grounded. You don't need to tap the hole. A through hole will do the job. I would drill a 17/64th " through hole and use a lock washer. Poor grounding is the cause of a lot of intermittent problems. Surges are also the cause of a lot of control circuits getting damaged.
@@zachctyler please list the hardware that is needed completely to do this, I'm having this issue on and off with my 2006 cobalt and am hoping this will do the fix, but I need a list of exactly what to do and how to do it please
i wish i could give 2 thumbs up!!!! fixed my friends cobalt with this video!!! thanks a bunch
hi, hey man i{ve got the same problem with my g5 2009 , it looks like the cobalt, question, do you get the problem again or it was solved, thanks!!!
My car doesn't have any of your symptoms but do you think that it could fix my hard shifting
I have a 2006 Chevy cobalt , its showing power steering error on dash , the mph isn't moving and it doesn't shift in 3rd and fourth gear could this be my problem also ?
Quin Shyne id give it a shot these cars need this fix
Clean and upgrade all grounds, one going under coolant reservoir, and especially one on the same side of engine, behind radiator fans the ground to transmission solenoid or pressure switch clean and or upgrade, hard shifting gone, torque converter isn't properly engaging and pressurizing you'll destroy your tranny if you dont
Im getting really tired of my car. I had this problem and did all this and it was fixed and worked for a month. But now its doing the same thing over again. All the wires are in the same place, so i dont understand why it would come up again.
OMG!!! its truly unbelievable, my cobalt works well again. thank you so much
I'm having the same problem on my 2010 cobalt. Only stays in first gear speedometer not working and power steering on dash lit up. I tried the grounding but I guess I was too late and my module went out for good. I took it to my mechanic and he said I did what he would have tried first which was what's in this video. Long story short gonna have to replace it but he did mention he could have it sent off and have it fixed. A new one isn't too expensive but part store said dealership would have to program it. My question is is that if you bought one used does it still need programmed? Are each one programmed to individual vehicles or is it that they just program them for Cobalts, Cruz etc because of different transmissions maybe. I'm thinking of just buying one used if I don't need it programmed to my car. Its Sunday btw so my mechanic is not in and need car fixed this week. Thanks and this guy is right on with the grounding it.
Having the traction control light and hard shifting problem only intermittently when I start in the morning. Shutting off and restarting usually fixes for the day. Will give your method a try. Thanks!
Clean and upgrade all grounds, one going under coolant reservoir, and especially one on the same side of engine, behind radiator fans the ground to transmission solenoid or pressure switch clean and or upgrade
I thought my tcm was going out on my 07 . The speedo stopped working and would only go in first and reverse; wouldnt shift out. Checked everything fuses etc. It turns out the kittens had gotten behind engine playing and had partially unplugged the vss sensor from trans.😂 i just wanted to leave this here just incase it helps someone later. Note: looking down from above the engine it looked fine, u have to get a hand on it to tell for sure.
so how many screws and wires are needed?
Did you get a P0700 code when you fixed this problem?
When doing this do you have to disconnect battery terminals?
DEFINITELY disconnect the battery terminal whenever you work with sensors, computers, connectors on your car.
Just curious i see alot of youtubers doing this. Has anyone just tested the black and white wire to the TCM?
Just did this to my 06 ss. Worked the first couple times I started it up, then it went right back to the bull. Any ideas?
GrizzyMode you didn't do a good job. Try again. Don't ground it to a painted surface. Tighten your bolts. Scrub the point you're grounding it to with steel wool, chore boy, steel "toothbrush," something. Use a little degreaser and make sure the spot you're mounting onto the tcm isn't all full of dirt.
Will this work for the impala ss
I just bought a 07 colbalt with these same symptoms I'm gonna try this
Would this also fix for a 2009 cobalt?
It should
Will this work with chevy impala 2008 3.6
I don't believe so...
for the wire you say gauge 12 but wichh is the amp?
not sure tbh
Would it not be easier to find the broken ground wire? There is not a car in the world that needs any wires "added" for factory parts to work. What you need to do to repair this is get a wiring diagram. Figure out what wires run into the PCM that are ground. THere shoudl be 3-6 (or more) individual ground wires. One of them is messed up. To find what wire it is disconnect the connector (or connectors) that have the grounds. Use a test light (with the aligator clip going to battery + and verify that each ground wire is nice and bright. THen you use a higher amperage light. I prefer to use a headlight bulb and socket. Then use the headlight bulb as a test light and do the test again. If the light is dim on one wire then you have found your problem. There is no need to add any wires for a stock car.
Thank you for making this video! You just helped my husband tremendously!
Hole provided? And is this a manual or automatic?
What about an 08+? My 09 as has a completely different ecm under the hood
Great job, thanks for update. But you changed the fix from the original and I'm not sure why (befuddled by electricity). Also now upper strut mount is no longer rusty?
Replaced the strut :)
Can u do this on Chevy Malibu 2011
First video showed one wire and 1 1/4" bolt. Now two? My bolts too rusty to use as ground. 230, 000 miles
My cobalt just started doing this! It’s done it twice to me including today. Thank you for this video it’s been very helpful!
Thanks for this! Kids 2010 wouldn't shift and now it does. Throwing codes P0017 P0974 B2AAA P0016 P0700. Shifts harsh now maybe she cooked it but i will try a trans flush and see what happens. No MIL now at least
IT WORKED! Thanks a million dude!
I have 2009 chevy malibu 4 cyl and wondering would it be good to try this? My current symptoms are no start randomly,abs light, service esc, rough shifting, and the the gauges randomly stop working. Please let me know cuz ive exhausted all my options except the dealer but all theyll do is charge so much
wheres the link for the kit
Had the same issue check vehicle speed sensor and connector I replaced both and it solved my problem
Why do you need the wire that goes from the front of the TCM to the back of the TCM? Seems unnecessary.
You dont
It worked!!! Thank you for the video Zach.
I have a 2006 cobalt ls with all the same symptoms that everyone is talking about, only mine is a manual transmission Does anybody have a cure for that?
Michael Burke same bro same I'm going to try it I'll let you know if it works send me an email so I don't forget to update you
deventech11@gmail.com
Hey man, don't suppose I could trouble you to tell me what part number your TCM is? Should be on a white sticker on the back side, opposite side of the connectors.
I have a Pontiac solstice that is having pretty much the exact same issues. I know it's the same engine, I'm just not sure if the transmission/TCM is the same.
For reference the TCM is 24239377 (labeled on TCM) / 24239785 (part number)
That is for 2007-2010
Pontiac solstice/gxp
Saturn sky/red line
Cadillac srx/sts
Of course I'm going to just try this out anyway regardless if you reply or not, and if it works I'll come back and edit. If I don't edit this post, then anyone who found this video like I did can assume it didn't work for the TCM I listed
Just di this on my 2008 SE and gained 15HP! Just kidding! Worked great, thanks!
And what was the problem with the car?
did this to my hhr . did not work. 1/16/18 replacing the hole tcm. $140 auto zone
t luzzo did it work? Does it go to engine power reduced?
no this did not work but i was getting a message engine power reduction. the car would not go faster than 40 and was running rough. so i poured through more you tube video. found 1. this is what i did. i pull off the air filter and replace it. i then spray carb cleaner on the carb flap and moved it back and forth. i then took a rag and wipe some of the carb build up and sprayed some more in there, wow now it runs just find. found out that if i have to replace the carburetor the cost is about $190 at o'reilly's
Omg! This worked thanks so much for posting this
No problem 😊
Thanks Zach! You fixed it! Your PayPal link from the last video didn’t go through. Is that updated too? ;)
You're welcome Angela :) paypal.me/ZachTracer is the updated one! But no worries
Thanks men I have the same problems on my cobalt 2007 and this really works.
Nice videos bro. You will make a good TH-camr
Great tip, mi cobalt works perfect. Thanks!
You're welcome!
my 2007 Chevy cobalt Sedan... has all the Messed up symptoms and the A.C. doesn't wana work because of this Crap... ima Gv your set up a try... THANX!
MR.MISFIT tha BLUENOSE GORILLAH same thing happening to me
u need to change the BCM, ECM and TCM... repair all three, then u need to get it Flashed by a Electrical Specialist... will be a total of maybe $700-800 but, the car will b brand new!
Coolant temp sensor or dirty connector on it, guessing your outside temp is way off too
@@ogxsoupxbone1524 Wow they took you for a ride after they saw you coming.. Clean up ALL the ground points and check the output speed sensor wires and repair them... Yellow and Purple.. Save yourself $800 needlessly spent on a $900 car
Did this and it did not work, cleaned the ground down below as well
Made me a quick 100 bucks.. thanks brah
aye! no prob man drop that sub to share the wealth ;)
I have a 09 cobalt, Lt, what I think is a transmission problem because it has a hard time going into first,slams into 2nd. I even have carsheild, I brought it to a shop they "did" a diagnostic test and told me the tranny came back with 37 different codes, then tried telling me it's not my tranny it's my front end, lol. Said screw them brought it to a Chevy shop hoping they'd have more brains, and they tell me my tranny is fine it's my cats, when I had dropped off my cobalt to the Chevy dealer, the check engine light came on. After a while, they told me my tranny is fine that it's my cat, the obd says it's low effecency. Before all this I had replaced my spark plugs, replaced the resonator, cat, a new exhaust manifold, and a new exhaust. I've read that a clogged cat can bring shifting problems but I've unhooked my upstream O2 sensor to see if it's release pressure but no still the same. Anyone else with this problem. I bought this car at 106miles. It only had 124,000. I refuse to let it go as it could just be something stupidly to fix and simple. Anyone have any ideas or suggestions?
This works !!! Thank you for this video