If Truck Randomly Shuts Off THIS MIGHT BE WHY!!
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- เผยแพร่เมื่อ 30 พ.ค. 2023
- If Truck Randomly Shuts Off THIS MIGHT BE WHY!! If Car or Truck Randomly Shuts Down This May Be Why!! Chevy Bulkhead Connector!! GMC Bulkhead Connector!! #randomShutdown #truckShutsOff #bulkheadConnector
In this video I take a look at the bulkhead connector that passes through the firewall of my 1995 GMC Suburban. This bulkhead connector plug is where the wires transfer from inside the cab to the engine bay.
I have been having an issue for a very long time where my truck would randomly shut down. There would be no warning or symptom just a complete shutdown. Back when it first started happening I would fix various wiring issues like the battery cables as well as upgrading all the cables and adding various grounds to the system. I thought through all this upgrading I had fixed the problem but just the other day it happened again. It's been years since it happened last and this time it happened in the middle of an intersection. I knew I had to once and for all figure this out...
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Intermittent electrical issues are never fun to chase. Great video Jimmy!
Gremlins lol
See my post right after yours.
Thank you 🤙
In most cases, you can get the pin out to that harness and find out what that wire is exactly for. Thank goodness you fixed the issue. Most people would be going nuts and never find it. Good looking out!! 👍
Glad you enjoyed the video! Thanks for commenting. 👍
The same thing happened with my Fiat Doblo yesterday. Thought the battery was dead but it was not the battery. Thank you, Jimmy greetings from Türkiye.
I haven't checked mine out yet, but I truly believe this is my problem.
Thanks a million!
I'm glad you discovered this. Wiring can drive you crazy. You may have saved a lot of iives and headaches. God bless you 🙏.
One great thing about owning a vehicle for many years is the familiarity you gain with it. I'm sure that was a help to find this problem. I, being an outside the box thinker, would have bypassed the connector block by splicing that wire from inside the engine compartment through the bulkhead to under the dash. You would eliminate any issue with that connector box and have easy access to that wire if needed. Regardless, I can't fault your fix. Nice job.
yes I had the same problem with a 76 ford , I bought off a car lot in Whitehorse Yukon really cheap , it had new battery ,new alt ,new ignition etc , then one day I was going to night shift at whitepass trucking as a tire man , and I seen a flash on the floor , that's what it was all along a # 10 main wire burnt off at the fire wall junction I joined the wire together and it was fine ever since .
I'm the original owner of a '95 Chevy 4WD Suburban...so far, knock on wood, in all these years I've never had this happen (and I do a lot of long-distance road trips). Thanks for the insight.
I don't own the same vehicle but the troubleshooting was a great thing to watch and it's always a good feeling to fix things, great job!
I have a 98. I took my truck to a guy that said on my models, there was a wire in the steering column messed up. He was an "expert". I changed my wiring harness in steering column since he did mention what you were describing about your shift light. I'm glad you found that problem. I'll be checking this out on mine. Great job!
Thanks, hope it helps!!
Any luck with your 98" mate ?
@@mechaniconduty4040 My issue was unrelated to this in video. My issue was in transmission wiring harness. What issue are you having?
@@ED-ti5tcrecently had the transmission dropped and running into it dying while running did u find your problem?
@@Miguel-lw2of No. But I'm thinking it has something to do with the factory security system.
Appreciate this Jimmy! This just happened to me on my 2005 Suburban, but the lights for the shifter indicator and AC headend unit (with all the AC/ Heat controls) have been very VERY dim for a couple years. Sounds like that could all be related - who knew? Will check this solution out on my truck tomorrow - thank you very kindly for sharing! -Ken
I CAN TELL HOW HAPPY YOU ARE!! GOOD FINDING 👍
I do remember that early one. Glad you found the culprit. That was a good one
84 c10 6.2 deisel is in the shop right now after watching this I'm 94.7 percent this wire problem is the reason thanks man
Cool! I’ve never had that issue with my ‘93 but better safe than sorry. Great video as always jimmy .
Thank you
Great video thanks. This inspires me to take a closer look at my old 85’ Dodge Diplomat. Sputtered a couple times before i parked it & it hasn’t started since.
You should pay someone to let them shoot at that car for target practice with a sub machine gun
Great vid, Jimmy. I have a 97 Chevy Suburban K2500 diesel. Still runs great with only 223K miles and continues to be my daily driver!
Lol 496 on the chassis of my 97
Man, I want that 6.5l so bad!!!
@@1RoadGarage You'd see better performance out of a 4bt from a bread truck
Good imformation,i have a 1999 surburban i will try this fix. have a blessed day!
Jimmy, you're a rock star! This wasn't the exact problem with my 2012 Silverado, but immediately sent me in the right direction after viewing this. My truck started randomly dying , usually right after starting it. No run, no crank was the only symptom. Warning lights, a/c blower, radio all functioned fine. After several attempts to restart, it'd finally go and run fine. It did this every day for about a week until I saw this vid. I saw another TH-cam video that showed how to separate the under-hood fuse box from the base. I took it apart and found the dozens of pins that plug in had a lot of chalky oxidation on them. With a knife blade and 400 grit sandpaper, I carefully cleaned them all up. Upon reassembly, I noticed a relay labeled "run/crank". There were 4 other identical relays plugged in, so I swapped that one with one labeled "running lamps". I'm not sure which was the problem, but it's been 2 weeks and the problem has not recurred. Thanks for the video. Helped me sort my problem out quickly.
Intermittent electrical. First, don't ever take the firewall pass thru block apart unless you are replacing it. That's the last thing you do before you give up and rewire the whole vehicle. Splitting that box can be like opening Pandora's box.
Check your fuel pump power lead from source to pump. Look at it, NOT continuity check. You've changed your fuel pump, lifted the truck, some other stuff. Check that power source wire from one end to the other for a pinched or chaffing wire, loose connection. Also, ignition switch wiring for the same issues. You could have a jenke ignition switch, or maybe the plug on the switch is loose or wires chaffed against a bracket under the dash. If it only happens after the truck is good and warmed up, take the ignition module out of the distributor to an auto parts store and have it checked. They aren't very expensive and and it will be cooled of when you check it so...
U r right about that pump wire
@@stuckinmygarage6220 Dropped my tank 3 times before I found issue with that wire not crimped properly
So what was that Red wire he fixed ??
@@ABMNuskii I think it goes to the neutral safety switch. It is a hot and too big of gauge to be just for the PRNDL light.
@@x-man5056 Thanks brother 👍🏾
Great video Jimmy, I liked suburban I got the 1999 suburban and still runs well. Your's in very good shape. Yeah! electricals are hard to fix it takes so much time to find. I'm hoping that's it after all.
U just hit it. Whoever mechanic or Tech didn’t plug it well was the one created this Mistry problem which is never ever would pops to any other mechanic’s mind!
Your videos are so good in details.. thanks for that .-)
back in the mid 80s I had a 1969 Mustang that would randomly die like that when taking off from a dead stop, or when I hit a bump in the road. It was almost the same thing, the screw that holds the two halves of basicly the same connector was loose. I tightened it up and never had that problem again.
Great Jimmy you Rock Dude!
yeah im finding a lot of stuff on my 92 S-10 too,. thanks for the video ✌
This is a great problem catch with patient 👍👍👍
Mine is a 6.5 diesel 98 gmc and is doing the same thing so this is one thing I’ll look at for sure tried absolutely everything else and thousands of dollars so far
I just fixed a stalling issue on my 1998 Jeep Grand Cherokee which was doing the exact same thing you described. My issue turned out to be the ESD Relay. It never showed a check engine light or anything, so frustrating to track down.
Great job, nice info!
Hey thank you sir my brother had the same plug and his suburban Chevy was doing the same issue thank you sire Garcia in Dallas Texas
Great video! Thanks!
Thanks for passing along this informations
Great job! I WILL see you in the next one.
Haha, cool, see you there!
I've got a similar random issue. Time to check all the electrical connections.
Have fun
Good stuff Jimmy, thanks for the knowledge. Now I'm going to have that failure lurking in the back of my head driving my Suburban! Only issue I've had is the anti-theft model went bad. Truck would start and run for 3 seconds and turn off. Drove me crazy for a few days until I replaced the module with a rebuilt one (part no longer made) and had the ECM "flashed" (I think that's what my mechanic said). Anyway, can't wait to see what's next.
I've had this problem with mine. The stupid security feature. I no longer use the fob to lock/unlock or the door lock buttons. If it wont start, turn the key on for 10 mins till the 'security' light goes off then turn key off then back on. Should start. Not sure what the permanent fix is yet.
@@tarabull75 you have to do a DIY hack and bypass the module with the right diode or have the module rebuilt (since they don't make them anymore). I had a two week nightmare until I got it figured out. The "learn the new key" trick worked for a few times but when the security light stays on... You're screwed.
I was having a similar problem with my Jeep with a 91 Chevy 350. Out wiring have been nice seeing this before I found the problem. I was getting engine code 42 which sent me on a wild goose chase buying parts.
Excellent video Jimmy :) also check out is a ground battery cable pigtail to fender wall connector get corrosion plus bolt of 10mm size also washer for to clean up with sandpaper on fender too it ! Next one is fuel tank sending unit plus plug to it frame rail ground wire connection to plus hardware and next fuel injection injectors need replacement 2 them ! Hope solved problem my late Dad 1990' Chevrolet Cheyenne 2500 pick up 305 motor happened to him in 2000 year and was driving caught off too!
Great video this content is saving somebody’s bacon
High quality as always! Please find out the function of that red wire.
Two thumbs up.. similar to K1500 GM Suburban...
This is a common problem on some of the jeeps, I changed out the ignition switch and everything still no start, started digging around and found this connection type on the starter under the car, and yup that was the problem, my 05 jeep liberty starts everytime now
Nice Jimmy. One other wire you need to check for preventive maintenence, is the ignition bypass wire inder the passenger side dash. There's a connector there that you disconnect to set the timing. The contacts there in mine corroded and became intermittent. I fixed it by opening up the harness to access that wire (brown if I recall) and I soldered extension leads about 12" long to each side. Put back together and then solder the two ends. Wrap up the excess wire with tie-wrap. To set timing, I will unfurl the wires and cut the end off opening the circuit. Then re-solder and re-stow those wires. It will never again become intermittent. Truck did not die, but stumbled horribly as the ECU lost control of spark timing (EST).
Very good info! Thanks
My 2005 Silverado had that and was the reason I got rid of it ultimately after replacing all the sensors, cables etc, ill forever wonder what it was.
Great information
Check your tires
My 1998 k1500 Suburban did this all the time. Would go out somewhere and would just die. Ended up being towed 37 times in one year. Would take to a specialist and said it’s fine and next day the Germlin would reappear. End end up parking up the suburban for 5 years then had an auto sparky rewire the complete engine bay so fingers crossed it’s sorted
Es realmente un excelente trabajo, thank you
Snap-On has had a tool for those connections for decades.
Will this issue throw any codes? My issue came up on our 2 hour journey back home from Disney. I was thinking well my battery connections do have to be replaced definitely on the negative. Then I was thinking it’s acting like a fuel issue. The first time it happened was going 75-80 on the highway when I was in the middle lane which was definitely sketchy. I got to the shoulder got the truck started got back on the highway took the first exit topped of my gas and then took back roads home. Then happened 3 more times at stop lights.
Years 95 to 2000s also had ign switch problems I replaced several they would often times run but might not up shift & the gauges might not work
*my '68 Slant Six Dodge Dart had same problem*
was stuck in the boonies but had my tools. drilled out a hole right thru connection where it's on the firewall and used a twist-on connector. it's still like that and running still
I have a 1991 Chevrolet bed and ext cabin....i have the same issue shouts off when stops on red light intersection. I exchanged distributor cap rotor ignition wires ignition coil
I check the buster break check valve and still shouting off...now that I see your video i will check that fuse box also like you did......I will let you know if works for me.
Thanks for your videos are so educational.
Jaime from HoustonTx 👍👍🙋😊
curious if its the same?
Did u find the issue @jaimef2674
Great video. My truck just started doing this twice. Right after taking off it died. Then it started right away. I noticed my volt gauge has been acting weird, a little erratic but mainly lower usual. I also noticed my flasher was not working well couple of weeks ago, so I wiggle it and it is all good. It died today again and start right away. 96 chevy truck. Do you think it might be related to the same connections? Did u noticed low or erradic volt gauge?
Thats funny dies at light when taking off, would've loved a birds eye view of your face when that happened
Intermediate issues like this are very hard for shops to re create this is a techs nightmare not being able to find the exact electrical issue good Find Jimmy @1Road
I have a 1995 gmc c1500 the fuel pump wasn’t the issue after I replaced it also replaced tps egr and battery terminals right now it’s at a mechanic shop but i truly believe it’s this issue
Congratulations
What did that wire go to on the engine wiring diagram
Would this work on a 2005 1500 hd. It starts but dies randomly. It’s not a bad alternator I changed that .
My truck would intermittently refuse to start. One day, I noticed that all of the gauges were reading wonky. I knew that I probably had a bad ground. It turned out that the negative battery cable had corroded at the battery terminal. I had to strip back the cable and install a better battery terminal connector. I also spayed some terminal protection fluid on the battery connections.
I have stalling issues as well. But mine would stall like yours did and I would have to throw it in neutral to keep it running at the light and only when the truck warmed up. I’m gonna check this out when I get a chance cause if it’s my issue. I’m gonna scream
What would have REALLY helped is if you would have identified the circuit that this wire is contained in. Would allow for folks to make sense of what is actually happening in the electrical system, the WHY of what's failing.
Main power feed to everything through the ignition switch.
Jimmy - can you PLEASE buy a Tenth Generation 2007-2014 Suburban1500 so you can spoil us all over again with all of your great videos? My 1996 Tahoe went belly up (engine) a few months back so after much hesitation decided to move on to a 2014 Suburban. I'm half serious on you buying one, keep up the great work.
I’ve been having this problem and I’ve notice a red wire not plugged in at all under the hood near the driver dash area and I’ve asked everyone where that wire goes and nobody knows and seem to think it’s not significant. I’m not sure if it’s the same red wire but I’ll have to find out where it’s supposed to go now to see if that has been the actually culprit this whole time.
Can you help me with one issue I have with my truck, mines a 1998 2 doors Tahoe, I have no speedometer, I already replace the cluster and the speed sensor
Where does that wire go to on both ends? Any codes recorded?
😂😂 i feel your frustration
Today while driving my truck started missing like it was out of gas , the Guage is Messed up but I pulled over and it died , my husband came by and we put 9 gallons in it and it still won't start , I can hear the fuel pump running when I turn the key on so I know it isn't that. Any ideas ? It's on a 98 Silverado. I'm worried cause that truck is my baby. I'd appreciate any help. Thanks
Nice info video but what was that red wire for ?
Did you ever fix the charging issue and the low voltage on gauge
Good luck. My 2015 truck is dropping voltage when I park or when I'm coming to a stop when parking. . The engine shuts off completely. I can instantly restart it but it's a problem. Once I had no power for 15 min and then magically it just works again.
My '02 Burb randomly shut off, always while I was driving. It was the crank position sensor. A known issue.
a littie dielectric grease is good as well. fixes 2007 malibu brake light issue
Geez, my 95 5.7 silverado been doing that since i bought it in 2002, fighting coils, pickup coils etc.
I had the SAME problem with a geo metro years back
Thats the a4 pin. Power distribution. For your ignition switch. That would definitely do that.
Have a 2004 Suburban and randomly either kills or won't run right then a separate day runs fine no issues 5.3 Vortec 4x4
Kinda have similar issue ! 78 Malibu will run fine then looses spark ! I’ve been through the HEI ignition!! Everything and why it’s loosing spark?idk for once in life I’m baffled
Hey Jimmy how about a video on the kryptonite setup you did.??
Maybe go on a trail…. 🤷🏽♂️
Electrical issues are always a problem with older autos my 1999 Toyota SR5 4x4 is a nightmare !
If your rpm gauge ever pounces at idle (not with rpm) but just flutters (it's hard to explain) but the coil is bad and it would be good to change the distributor aswell. Some people will say to change the icm under the cap but that may not fix it and if it does the pickup coil is not far behind it.
Good to know
Can also be an air core motor (95+) that has had the viscious dampening fluid dry up/leak out
I would've dabbed a little hot glue in that terminal to keep it in for sure but good job. What's a PSA?? Or do you mean PAS?
Ok so let me ask you this, because on my 95 silverado 5.7 tbi. I had a similar issue. Anyone i got some gas, rode not even 5 miles up the road. Pulled a parking lot and went over a speed bump. As I'm going over, the truck just immediately dies. No jumping like it's struggling to get fuel or anything. Honestly it was so suddle. I didn't notice it until I tried to give it some gas. Then it cut off two more times without me going over a speed bump in the same parking lot. I checked the battery terminals, they were good. I even tried moving the around to see if it would affect the truck running. Typically this would only cause an issue if the alternator was being over worked. I played with the wires around the distributor and nothing. I played with the alternator wires. And nothing.. any ideas? Because I'm loat at this point.
What wire is that called ?
have you considered getting a project car. Something that has been sitting for awhile, and needs restoration. That seems to be the in thing online right now.
The ecms in these older vehicles are way more resilient because there just a ground Block should be fine Jimmy @1Road
It is what is referred to as the wiggle test.
What a nightmare especially when guessing what the issue is.
Ignition control module. Get a GM one and use good thermal paste. I’ve owned 6 GMT400s over last 20 years
Good point! 👍
Those have a ignition switch problem. Pull the column panel down and wiggle the ignition switch wires pay attention to the large red wire it is ignition-1.
I assume that wire is fuel pump power wire!
It's crazy why high current connections arent hard wired more securly
My 2011 Suburban has similar random split second power loss / door locks engaged each time, and occasionally dies.
wow does that really only have 89000 miles...if so thats awesome
Did you check a wiring diagram to see what that wire was? Got me curious
I tried. Looked in my Chilton and online. Only thing I could find says battery.
@@1RoadGarage with the amount of work you put into that truck a single vehicle subscription to alldatadiy would be a worthwhile investment. It’s like $99 or something. Complete factory service info and all diagrams. Those aftermarket books can lead you astray. Alldata is what the pros use. Just a thought
Just to let you know I had a same problem and found out it was my ignition switch and had to replace it 💀 it’s a 1995 gmc sierra
I had a 2002 Saturn SL2 that would not start after turning car off (happened in 2010), it would get me home in limp mode, and I had a hard time trying to figure it out. The GM dealer shop could not solve it either. Car would start and run most of the time, but when it died I would have to wait a while and it would start again. I can't remember what lights would blink, but it seemed it had to do with the anti-theft system or the bcm. Then while checking all the inside fuses, I touched the thick red wire that went from the underhood fuse box to the inside fuse box, and it was loose. I rigged another positive 12v wire from the underhood fuse box to the inside box and the problem was solved. I just stuck the ends of the wire into the unused +12v fuse buss sockets, I know the fuse box would fall apart if I opened it. I ran the car 6 more years till the coolant manifold broke and then scrapped the car in 2016. While the Saturn ran well, it was the quietest 4 cylinder car I ever owned, even compared to my Corolla.
I’m willing to bet the big-3 all use the same bulkhead supplier.
Any updates
Truck is fixed. That wire completely was my issue. I fixed the connection to be more solid and haven’t had an issue since. 🤙
😊
Toyota RAV4 and Toyota Tundra to fix this issue 😊
Be worse than what he has.
There’s still tons of these 90’s GM trucks and SUVS still running around for a reason. Fantastic vehicles. You can keep your Yota’s.