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You might want to have the battery checked. I had some strange electrical symptoms that were eventually tied back to a battery that failed a load test. They fact that you only drove it for 600 miles in 6 months could be a factor in the battery failing if that is the case.
I can do that, but it is unlikely to be the problem. This is a pretty well documented issue that appears to have a TSB in place.
 

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Discussion Starter · #182 ·
My 2021 Denali just started intermittently having all the cameras go out, and the black screen with exclamation point & camera in the circle slashed out. Bought back in Dec. but hardly used it for 6 months (600 miles). Drove it 1500 miles north to my place in NH for the summer last week, and it started yesterday. Looks like it locks up the screen, but pressing the Home button brings the rest of the stuff back to life.

Stopping and turning off the car and then back on doesn't work with a quick stop & start, but does if the SUV sits a while. I'm guessing the infotainment system has to go to sleep before a reset will occur.

I won't be going back to FL and my dealer until late September, but I'll probably wait until then to let them deal with the TSB repair. I'm not anxious to let an unknown quantity start changing cables or tying up my only transportation while I'm still 1500 miles away from home. Hope for the best I guess.
Really sorry to hear this. Exact symptoms I was having. They should be able to get you taken care when you are ready.
 

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Just picked my vehicle up....

#21-NA-048

Part numbers replaced. 86775887 & 86775887

Must be a supplier issue. China parts?
10 pages in the thread and +180 postings.
At least there was finally a TSB made on it.
 

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Must be a supplier issue. China parts?
10 pages in the thread and +180 postings.
At least there was finally a TSB made on it.
We need to stop assuming China. It could be anywhere anymore.

Much of today’s electrical is due to the new systems we have. This is why GM is introducing new electrical architecture in the coming vehicles.

GMC tried to put halogen back up bulbs in the 17 Acadia and it set off a mess of electrical issues.

A battery starts to go bad and then it sets off all sorts of electrical issues. My GTP had a failing battery. As I was driving the radio stopped, next the AC, them the Speedo and dash. Systems shut down to keep the engine going. The power management systems in these vehicles is sensitive Nor easy to fix.

Todays cars need more power but still have to make do with 12 volts. GM was going to up,power nut the new systems are faster and more efficient. The next Acadia should be upgraded.
 

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We need to stop assuming China. It could be anywhere anymore.
Much of today’s electrical is due to the new systems we have. This is why GM is introducing new electrical architecture in the coming vehicles.

GMC tried to put halogen back up bulbs in the 17 Acadia
and it set off a mess of electrical issues.
I think you meant " tried to put LED back up bulbs ". GM now has warnings in most Owners Manuals not to replace stock bulbs with LED.

And I agree. Today's vehicles are very complex. Well aware of that. And I only raised the question of whether the questionable part(s) might have been sourced from China. Many are and also from other countries. Just the nature of being competitive and cost control in many industries today.
 

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I think you meant " tried to put LED back up bulbs ". GM now has warnings in most Owners Manuals not to replace stock bulbs with LED.

And I agree. Today's vehicles are very complex. Well aware of that. And I only raised the question of whether the questionable part(s) might have been sourced from China. Many are and also from other countries. Just the nature of being competitive and cost control in many industries today.
Yes it was LED.

I just tire of the China crap. People say that so often that many think China only makes crap. The real dangers is that they are today producing very good and complex products like most of our cell phones and computers. This is where the great danger is and it too often gets over looked.

We have to deal with Chinese production at work and I see what they get right and it is terrifying.

Then what is even worse is the stuff we used to get right here and now get wrong.

Either way the electronics in many vehicles are very sensitive anymore.
 

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Essentially the same thing but a buyback is a good faith deal between the customer and the dealer. A lemon law is using a federal law forcing the dealer/manufacturer to take the vehicle back and refund all monies paid to conduct said transaction.
I'm in my fourth month, no rush. I still like my Acadia.
 

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Well, so last night I parked the GMC in the garage as I normally do. This morning I got in it, backed out of the garage and the backup camera worked perfectly fine. Drove to work where it sat all day and got in to come home and no camera. I mean no cameras plural. None of them work. UUGGHHH. Mine's a 2020 Denali and after reading all of you guys stories I have to admit I'm a little anxious about what I'm in for. I do agree with what many of you wrote about complexity and build quality. There's no question the Acadia is a complex vehicle. But GM designed it that way. So if they can't service it why build it? The proof's in the puddin' as they say and it's time for my dealer to stand up and prove he's going to bat for me. The butt biter for me is the class of SUV the Denali is in there are many other choices I could have made. Many of them with stellar track records of support.
 

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Discussion Starter · #190 ·
Well, so last night I parked the GMC in the garage as I normally do. This morning I got in it, backed out of the garage and the backup camera worked perfectly fine. Drove to work where it sat all day and got in to come home and no camera. I mean no cameras plural. None of them work. UUGGHHH. Mine's a 2020 Denali and after reading all of you guys stories I have to admit I'm a little anxious about what I'm in for. I do agree with what many of you wrote about complexity and build quality. There's no question the Acadia is a complex vehicle. But GM designed it that way. So if they can't service it why build it? The proof's in the puddin' as they say and it's time for my dealer to stand up and prove he's going to bat for me. The butt biter for me is the class of SUV the Denali is in there are many other choices I could have made. Many of them with stellar track records of support.
How did you make out with this? Did you have this vehicle since new?
 

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I have a 2019 Terrain Denali which had a minor front-end collision...that resulted in an incredible amount of damage because the vehicle front-impacted a trailer hitch ball directly on end of frame rail!! Body shop discovered black driver-side camera feed after repairs. GM dealer has had it for TWO WEEKS since....of course while I've long passed the insurance company rental reimbursement since it took over 60 days to make vehicle repairs!!!

So I really appreciate having all this additional knowledge and background on the camera system. Up to this point we have never had an issue with any of the technology in the vehicle. I sent the link to this thread to the body shop manager and the insurance adjuster who are both in communications with GM dealer.

So after two weeks at the dealer.....and very recent escalation and griping to insurance adjuster and body shop...and demanding that the vehicle be moved to another dealer, they have all of a sudden reported that they found a bad coax cable or connection and is being replaced today. Once I see paperwork I'll report any additional useful information. Just thought I'd mention all this and what the root-cause is reported thus far. Seems like the network of coax cable and various connections is a weak link in the design.

Thanks
 

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I have a 2019 Terrain Denali which had a minor front-end collision...that resulted in an incredible amount of damage because the vehicle front-impacted a trailer hitch ball directly on end of frame rail!! Body shop discovered black driver-side camera feed after repairs. GM dealer has had it for TWO WEEKS since....of course while I've long passed the insurance company rental reimbursement since it took over 60 days to make vehicle repairs!!!

So I really appreciate having all this additional knowledge and background on the camera system. Up to this point we have never had an issue with any of the technology in the vehicle. I sent the link to this thread to the body shop manager and the insurance adjuster who are both in communications with GM dealer.

So after two weeks at the dealer.....and very recent escalation and griping to insurance adjuster and body shop...and demanding that the vehicle be moved to another dealer, they have all of a sudden reported that they found a bad coax cable or connection and is being replaced today. Once I see paperwork I'll report any additional useful information. Just thought I'd mention all this and what the root-cause is reported thus far. Seems like the network of coax cable and various connections is a weak link in the design.

Thanks

So I finally got my Terrain back after a total of nearly 120 days. An unimaginable amount of damage for a seemingly minor non-airbag "premature start-to-go" rear-end a pickup truck with trailer ball that impacted precisely on end of frame member and caused $20,000 worth of damage. Sorry, I digress!!!

The dealer spent $1200 of diagnostic time to troubleshoot the no-video black image of the driver side door mirror camera. A little over two weeks of shop time and maybe waiting on parts. In the end, the entire mirror assembly (~$600) was replaced in addition to a $275 "coaxial cable". Total cost of repair was over $2000. I'm glad I didn't have to pay that bill, but I think it's wrong that any customer would be subject to such endless and aimless amounts of diagnostics....probably being performed by a mechanic who doesn't know the first thing about all this technology and is provided limited support by GM. So far as I'm concerned, most of the $1200 should have been credited off as "mechanic education". So good luck if you have a camera problem!!!
 
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