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Discussion Starter · #1 ·
I bought a used 2016 Diesel Colorado Z71 and immediately began having issues. They replaced the EGR and temperature sensors 6 times, replaced the exhaust manifold, replaced the turbo exhaust hose and could never find the root of the problem. I had it for about 8 months and after fighting with the dealership and GM they agreed to let me trade it back in if I bought a new one. In October 2020 I bought a 2019 Diesel Colorado Z71 and so far the EGR sensor has been replaced 4 times, the replaced the exhaust manifold and just had to replace the turbo exhaust coolant hose. I have an open claim with GM to buy the truck back since this is the second truck with the same issues with no answer for what is causing the problem. Curious if others are experiencing similar problems.
 

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Discussion Starter · #3 ·
Two different trucks with the same exact problems what do you think it is
My hope is you are not implying it is operator error. In my 2019 the EGR sensor continues to be forced out of the exhaust manifold. The technician tried over torqueing it but that did not work. They tried using locktight while exploring the cause which also did not work. Multiple dealerships have attempted to figure out what is causing it, including GM technical assistance. I would imagine if it was something I was doing they would be able to figure that out. My 2016 was purchased solely as an extra truck for camping and every time I drove it it broke down with failed sensors and would go into reduced power mode. My hope is that someone else has experienced these issues and has found a solution. One technician told me that GM is aware of the defect and will be issuing a recall at some point but they do not yet have a solution so that has not happened. Now that there is a pending claim with GM they deny this.
 

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Well the thing about Locktite is you heat it to soften it for removal. I'm not surprised that using it on the EGR in any way didn't work. Seems to me that some type of mechanical locking solution would be more prudent. The issue will be the length of the sensor and what could be use in that situation. It's interesting because I haven't heard of anyone else with that issue.

Please give us a follow up so others who may have that issue in the future have a potential resolution.

Good Luck
 

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I have a 19 ZR2, I have not heard of this issue and I definitely have not had it.

I have had the 2 most common issues, alternator pully leaking and a cooling fan failure ...(rotationality test) failure occasionally.

Dealer replaced both with new without a hitch.

I advise against the "Auto Butler" if they offer it.. that is where issues started. Some '$6 n- hr dimbulb dropped his washrag on the ground picked it up and washed my truck with it.. scratched the **** out of every surface.

Dealer already replaced the head lights, grill and They have a grill valence waiting, I just have been too busy to get it in.

They buffed the truck but many of the scratches still show.

Yeah.. wash and detail your own ****, I do.

Dont fall for the BS about it needs to be done for the paint warranty. It doesn't.
 

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Discussion Starter · #6 ·
UPDATE: After GM has repeatedly tried to figure out what is causing the issue and how to fix it they have now agreed it cannot be fixed and have agreed to repurchase the truck for what I paid for it.
 

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UPDATE: After GM has repeatedly tried to figure out what is causing the issue and how to fix it they have now agreed it cannot be fixed and have agreed to repurchase the truck for what I paid for it.
So this is vehicle # 2 they bought you out of correct? The next question where are you going to go from here?
 

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I bought a used 2016 Diesel Colorado Z71 and immediately began having issues. They replaced the EGR and temperature sensors 6 times, replaced the exhaust manifold, replaced the turbo exhaust hose and could never find the root of the problem. I had it for about 8 months and after fighting with the dealership and GM they agreed to let me trade it back in if I bought a new one. In October 2020 I bought a 2019 Diesel Colorado Z71 and so far the EGR sensor has been replaced 4 times, the replaced the exhaust manifold and just had to replace the turbo exhaust coolant hose. I have an open claim with GM to buy the truck back since this is the second truck with the same issues with no answer for what is causing the problem. Curious if others are experiencing similar problems.
Need to delete all that crap!!!
 

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I have a 19 ZR2, I have not heard of this issue and I definitely have not had it.

I have had the 2 most common issues, alternator pully leaking and a cooling fan failure ...(rotationality test) failure occasionally.

Dealer replaced both with new without a hitch.

I advise against the "Auto Butler" if they offer it.. that is where issues started. Some '$6 n- hr dimbulb dropped his washrag on the ground picked it up and washed my truck with it.. scratched the **** out of every surface.

Dealer already replaced the head lights, grill and They have a grill valence waiting, I just have been too busy to get it in.

They buffed the truck but many of the scratches still show.

Yeah.. wash and detail your own ****, I do.

Dont fall for the BS about it needs to be done for the paint warranty. It doesn't.
Comprehensive insurance claim the scratches. Insurance will pay you for a full repaint. Insurance will subrogate against the dealer. You can pocket the insurance proceeds to use for other mods.
 
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