Man you guys; have you even thought of getting THE MANUFACTURERS book with all the wiring schematics? It's a bad ground! All the chevys 88-98 truck and SUVs have the dumbest places for ground on the frame. What happens is "yes" you are correct as the alternator drives current through your electrical system and when you go to use your climate control; that whole module gets fried that very moment cause there's no where for it to ground and just blow the fuse instead. The ground varies for diffent models that's why service manuals are really helpful in showing where the ground is. Either bad ground wire, frayed, cut, or corroded and just not getting ground. So by cutting the wire and just leaving it like that your gonna end up eventually frying your pcm which is gonna cost you a shit ton of money just for the computer itself and the reprogramming. Chevy wasnt thinking by using direct wires without a 2part failsafe and the wires being 14-16 gauge not being able to handle the current when there is a bad ground and then either 1] Frys the board on circuit path 4 or 5 and or 2] will fry your actual terminal connector and switch usually on #1 POWER wire terminal head.
Would taking the black (ground) wire that is part of the bundle in the harness for the climate control module and finding a very good ground for it and "tee-in" and additional ground point to that wire fix the problem? My assumption is to leave everything else exactly as GM intended, just tee-in an auxiliary ground to the existing ground wire. (?) Correct?
So you saying removing the 4th wire connected to the harness side of the truck will stop these things from frying? I have 2 that are toast, one has that same burned spot as in your video it’s fried in the same spot. The other one I haven’t removed from the truck yet but i’m sure it’s gonna be the same.
all the lights on my control module light up normally but I still have my AC cut in an out meaning it seems to work(sorta) sometimes and other time not at all. Compressor not engaging, nothing. AC tech (who I paid a lot of money only to not be able to fix it) says its electrical bc its not getting power signal to the compressor but he can make the clutch engage when he applies power to it. He pointed out the AC control module, but as you stated if it lights up, its not blown. I dont know then.
My module just took a shit..weird thing is, is that the ac light will only turn on when the blower is in the OFF position. All the other lights work. So the ac does not turn on once I engage the fan...also my air direction nob no longer adjusts. It's just stuck on one setting. So I bought a whole new module on Amazon for 80 bucks. I'm going to install and hopefully it's all good!! And checked every fuse and they're all good...frickn weird
@@donnywilson6460 Thanks! I didn't know amazon had them until reading your post. Mine if for a Suburban with rear window defrost. Amazon had one so I ordered it and spent the $12.00 for four years of warranty. If it smokes, I will just keep returning for new while I try to find the problem. I am going to add an additional ground wire to the black wire that feeds the unit and see if that helps. I'm just going to "Tee-in" to the existing ground and then to some easy known good ground under the dash somewhere. I will update when I get mine installed.
Hi, how are you? I got ac issues and I track it dowm to presure switch. I change a new switch and everything worked couple days just fine but suddenly hvac stopped controllers not working at all. Can you give any tips what to do?
And the only reason that I say this is from learning these stupid vehicles by trial and error. Many models many years and I also own a 96 5.0 305 C1500 so it is also a labor of love. Gm just didnt think about the wiring lasting at least 20 years or guessing that the grounds would be fine even though out of all the grounds only 2 are actually covered and protected
I need your help on mines, all components are new. I can only get my clutch to engage if I jump the relay under the hood. I've never gotten lights on my climate control box since day 1. Never seen them. Maybe if I Clio my green wire it'll work
@@Good-humans hi so just cut the green wire and peave it without hooking it up to anything and there are no ac control unit problems? i already subscribed sorry i have the same problem and keep burning up control modules just want to make sure
I need a little clarification. Like you, I am on my 4th or 5th A/C control unit. I have had two types of failures. The traces on the circuit board fry exactly as you demonstrated on yours. Also, the power transistor has blown on two of mine as well. I am still not sure what your "fix" is. I have watched the video several times. Is the fix that you literally cut the green wire so it is no longer connected to anything?? My truck, 1996 Sububurban has the same wire colors as the very last example you showed. My wires are just like that. On the grey connector you show, there is a set of 4 wires and a set of 5 wires. Did you cut the green wire that is the second wire on the 5 wire set? Does anything Not work since cutting the wire? Do I have to do the red jumper you did?? I have a new A/C control unit, not a junkyard one that I am ready to install. I want to make the modification you did and so want to be sure. For the brand new A/C control unit, do I have to do the red wire jumper you did, or just cut the green wire and then install the new unit? The wire I think you are showing to cut is the second wire up, after the brown wire and in between it (brown wire) and the other green wire in the 5 wire set on the grey connector. Correct?? This is a really helpful TH-cam. Thank you. I subscribed. Where do we purchase the two pressure sensors you replaced? Is yours still working with the cut green wire??
Hello! I changed the new pressure switch to ac and the air conditioning worked fine for 5 minutes. Then something happened and now the HVAC doesn't adjust any settings anymore. Can you tell where the problem is? I cut the wire as you advised, but then the lights in the module don't work anymore.
I have a 97 Tahoe LS and my rear air only blows cold.. not ac cold but room temp cold. I know there's separate ac shit in the rear but is there also a separate heater core too? Or is there a blendoor somewhere? It's cold and I need it warm this winter lol
Man I need that 5 connector harness ..thats used to put the 96 + climate panel into a 95 silverado year only that was discontinued been looking into trying to make one
I have a 97 Chevy Tahoe my bulbs are burned out my fuses were however my brake lights do not come on when I engaged the brake pedal do you have any advice?
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Man you guys; have you even thought of getting THE MANUFACTURERS book with all the wiring schematics? It's a bad ground! All the chevys 88-98 truck and SUVs have the dumbest places for ground on the frame. What happens is "yes" you are correct as the alternator drives current through your electrical system and when you go to use your climate control; that whole module gets fried that very moment cause there's no where for it to ground and just blow the fuse instead. The ground varies for diffent models that's why service manuals are really helpful in showing where the ground is. Either bad ground wire, frayed, cut, or corroded and just not getting ground. So by cutting the wire and just leaving it like that your gonna end up eventually frying your pcm which is gonna cost you a shit ton of money just for the computer itself and the reprogramming. Chevy wasnt thinking by using direct wires without a 2part failsafe and the wires being 14-16 gauge not being able to handle the current when there is a bad ground and then either 1] Frys the board on circuit path 4 or 5 and or 2] will fry your actual terminal connector and switch usually on #1 POWER wire terminal head.
Would taking the black (ground) wire that is part of the bundle in the harness for the climate control module and finding a very good ground for it and "tee-in" and additional ground point to that wire fix the problem? My assumption is to leave everything else exactly as GM intended, just tee-in an auxiliary ground to the existing ground wire. (?) Correct?
Haven’t fried anything and it’s been good for years so - you can throw that long reply and theory out lol
And still working good years later !!! Ain’t fried a thing yet home 🏡 boy 👦
@@Good-humansstill working?
You video is very awesome, you explain stuff greatly, thank you.
Man,, thanks for the video,, it works . God bless you my brother
Thank you 🙏 please subscribe
So you saying removing the 4th wire connected to the harness side of the truck will stop these things from frying? I have 2 that are toast, one has that same burned spot as in your video it’s fried in the same spot. The other one I haven’t removed from the truck yet but i’m sure it’s gonna be the same.
@@jaybee1892 yes
Thanks bro I just ran into the same shit. Bro you save me lots of time and money. I wish I can donate to you my friend
all the lights on my control module light up normally but I still have my AC cut in an out meaning it seems to work(sorta) sometimes and other time not at all. Compressor not engaging, nothing. AC tech (who I paid a lot of money only to not be able to fix it) says its electrical bc its not getting power signal to the compressor but he can make the clutch engage when he applies power to it. He pointed out the AC control module, but as you stated if it lights up, its not blown. I dont know then.
Check your evaporator switch , it cuts on and off your ac compressor
I’m about to try it right now
My module just took a shit..weird thing is, is that the ac light will only turn on when the blower is in the OFF position. All the other lights work. So the ac does not turn on once I engage the fan...also my air direction nob no longer adjusts. It's just stuck on one setting. So I bought a whole new module on Amazon for 80 bucks. I'm going to install and hopefully it's all good!! And checked every fuse and they're all good...frickn weird
Can you let us know how it worked out? Thanks.
@@benkanobe7500 just got it on my porch tonight. I'll install it tomorrow
@@donnywilson6460 Thanks! I didn't know amazon had them until reading your post. Mine if for a Suburban with rear window defrost. Amazon had one so I ordered it and spent the $12.00 for four years of warranty. If it smokes, I will just keep returning for new while I try to find the problem. I am going to add an additional ground wire to the black wire that feeds the unit and see if that helps. I'm just going to "Tee-in" to the existing ground and then to some easy known good ground under the dash somewhere. I will update when I get mine installed.
You can by them I think on Amazon and eBay any other questions let me know
Thanks 🙏 for watching my videos
Hi, how are you? I got ac issues and I track it dowm to presure switch. I change a new switch and everything worked couple days just fine but suddenly hvac stopped controllers not working at all. Can you give any tips what to do?
Way helpful. Thanks.
And the only reason that I say this is from learning these stupid vehicles by trial and error. Many models many years and I also own a 96 5.0 305 C1500 so it is also a labor of love. Gm just didnt think about the wiring lasting at least 20 years or guessing that the grounds would be fine even though out of all the grounds only 2 are actually covered and protected
Thanks 🙏 for watching my videos
I need your help on mines, all components are new. I can only get my clutch to engage if I jump the relay under the hood. I've never gotten lights on my climate control box since day 1. Never seen them. Maybe if I Clio my green wire it'll work
.... You bought four of them at 25 a pc it would add up to one fully functional new one for 100...
I know you not understand because you must haven’t had the problem- it’s the wiring -
These vehicles were not meant to last this long.
Im at 248,000
I am happy to fix anything wrong
@@Good-humansyou did a great job. I have the same issue with a TAHOE 2002. Thank you for sharing your knowledge.
Do u have a video of how to take out the harness ...i cant seem to figure it out. Need a video taking it off and putting it back on. Please!!
It’s just the clip on the harness
Hi quick question did you replace the sensor in the front that's next to compressor also or just snip the green wire thx for your help
I end up replacing all the sensors - but I also clipped the wire - please subscribe to the channel I can make you a personal walk through video
@@Good-humans hi so just cut the green wire and peave it without hooking it up to anything and there are no ac control unit problems? i already subscribed sorry i have the same problem and keep burning up control modules just want to make sure
I need a little clarification. Like you, I am on my 4th or 5th A/C control unit. I have had two types of failures. The traces on the circuit board fry exactly as you demonstrated on yours. Also, the power transistor has blown on two of mine as well.
I am still not sure what your "fix" is.
I have watched the video several times. Is the fix that you literally cut the green wire so it is no longer connected to anything?? My truck, 1996 Sububurban has the same wire colors as the very last example you showed. My wires are just like that. On the grey connector you show, there is a set of 4 wires and a set of 5 wires. Did you cut the green wire that is the second wire on the 5 wire set? Does anything Not work since cutting the wire? Do I have to do the red jumper you did??
I have a new A/C control unit, not a junkyard one that I am ready to install. I want to make the modification you did and so want to be sure.
For the brand new A/C control unit, do I have to do the red wire jumper you did, or just cut the green wire and then install the new unit?
The wire I think you are showing to cut is the second wire up, after the brown wire and in between it (brown wire) and the other green wire in the 5 wire set on the grey connector. Correct??
This is a really helpful TH-cam. Thank you. I subscribed.
Where do we purchase the two pressure sensors you replaced?
Is yours still working with the cut green wire??
I just cut the green wire - is all I did please subscribe I can make a personal video for you
@@Good-humans Thank you. I subscribed and hit notification. Is you A/C still working with your cut-wire fix?
Did this work?
@@Good-humans I subscribed. You never answered. Is your still working after just cutting the green wire? Any other issues?
@@benkanobe7500 yes it’s been working for years now
yo you got that 10 dollars i loaned ya awhile back???
well i'm gonna need that back now... haha
Hello! I changed the new pressure switch to ac and the air conditioning worked fine for 5 minutes. Then something happened and now the HVAC doesn't adjust any settings anymore. Can you tell where the problem is? I cut the wire as you advised, but then the lights in the module don't work anymore.
Did you check all the fuses ?
@@Good-humans Yes I did but didnt find any bad one..
@@rayurayu2712 you might have just burned out the hvac controls
@@Good-humans I buy tomorrow a new one. Seems to be at sale 49.99
I have a 97 Tahoe LS and my rear air only blows cold.. not ac cold but room temp cold. I know there's separate ac shit in the rear but is there also a separate heater core too? Or is there a blendoor somewhere? It's cold and I need it warm this winter lol
i have a 2011 it has two heater cores - my 99 i dont think has two
I bought a heat/ac control module unit for $42.00 on Amazon for my 97 Sierra.... Idk where youre looking at that is $100+ dollars?
I did this video a few years ago , you just brought it - prices drop
Are there any diagrams? I’ve boughten a couple connectors for the fan speed dial and none of the wires are the same colours for my truck
I haven’t found any diagram any where
Good video
Thanks
Man I need that 5 connector harness ..thats used to put the 96 + climate panel into a 95 silverado year only that was discontinued been looking into trying to make one
Rick Carnes I got mine at the junk yard , they have a few ones there
I been looking in my area not found one yet..but if make a video on how that harness is made help alot of people with 95s
Rick Carnes ok I can do that subscribe to the channel and tell me all what you need in the video ? And I got you
Just something like a step by step on where and how the wires are run between those 5 connectors
How to figure out if a 2001 Tahoe has a leak in the air condition
Is your ac still working sir!? I just purchased a new one
I have a 97 Chevy Tahoe my bulbs are burned out my fuses were however my brake lights do not come on when I engaged the brake pedal do you have any advice?
Hit the subscribe
Do you still have the wiring harness that will connect the 96 control panal to the 95 in dash wiring
I might do you need ig
Is it possible to have the rear roof climate controls disconnected and still control it through the ones on the front at the roof?
Might be possible I really don’t know that answer I thought about it myself
why does my ac and heat only work on high? I changed the the climate control, blower, sensor on the blower and the sensor on the dryer
That has to do with your vents not opening until they are high
So uhhh
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