New 2023 Tahoe Z71 - wiring harness & computer module corrosion

May 2023 purchased new Tahoe.

December 2023 started having electrical issues. Computer and dash panel screen both glitched and blacked out. Heater ran full blast, no sound out of speakers, and several crazy warning lights came on. Took it to dealership, they messed with it for a couple days and it went away. Admittedly said they didn't fix it.

Fast forward to end of April 2024, it suddenly happens again while the wife was driving it. Towed to dealership. They informed me the wiring harness and computer module were corroded from liquid. We have not been aware of any liquid spills, in the vehicle.

These items were designed and placed in the center console underneath the cupholders on the center console.

Pretty dumb idea to place the wiring harness and computer module in the middle console under a cupholder, and not being sealed to keep liquid out.

The Tahoe was in the dealership shop for 4 weeks. Finally got the Tahoe back May 29 (a full month), but not complete. They replaced the wiring harness, but the module is still on back order. The service tech cannot find the part and has no end in site for finishing the repair 100%. So I have been driving it with no sound through speakers (radio or phone) and no AC in the rear, for nearly 2 weeks.

Summer road trips are going to be a blast!! Guess I see some car rentals in my future! Thanks Chevrolet!

Oh the other kicker, I have to pay out of pocket for all repairs, parts and labor. Warranty refused to cover it. What a failure of design! Hey Chevy if you are going to put an important electronic component underneath a cupholder, how bout you make it sealed off to liquid!

Anyone have any similar issues? I've been a life long Chevy person.. but my loyalty is running thin.

So just because it is under the cupholder doesn't mean it automatically is subject to liquid damage; although it would increase the risk. Did someone indeed spill something on the center console/cupholder area? Did it get cleaned up? What was spilled?

WalleyeMikeIII said:

So just because it is under the cupholder doesn't mean it automatically is subject to liquid damage; although it would increase the risk. Did someone indeed spill something on the center console/cupholder area? Did it get cleaned up? What was spilled?

Click to expand...

We have no proof or knowledge anything that was spilled. Although we have had people (family and friends) drive the vehicle while were out of town. No one has mentioned anything about it.

thedude26 said:

We have no proof or knowledge anything that was spilled. Although we have had people (family and friends) drive the vehicle while were out of town. No one has mentioned anything about it.

Click to expand...

I suspect that there was a large spill that was not reported to you. Just my 2 cent speculation.

Joseph Garcia said:

I suspect that there was a large spill that was not reported to you. Just my 2 cent speculation.

Click to expand...

Agreed. Putting a wiring harness and module underneath a cup holder where water can leak through and zap them? Highly likely something is going to spill when you have 3 kids under the age of 9. Tahoes and suburbans are family vehicles.

Hello,

May I ask how much the repair cost?! I have the exact same issue with my 2023 Tahoe and they keep "fixing" the power module through warranty with the issue continuing.

Thinking this is the issue with mine as well based on all the same errors, heat, and speaker intermittent problems.