Electrical Issues

['14-1500 GMC]

I'm having the same issue with my 14 SLE. Is there a recall number for this issue?

Thanks.

['14-1500 GMC]

On 3/8/2019 at 7:16 AM, 22’s said:

Had no one checked the ground bolt up under the driver side front speaker grill? I guess there’s a rubber gasket thing that gets caught between the bolt and washer not allowing it to make full ground. 

That's interesting, because when my truck stalls out after making a low speed turn I have to pull the negative (ground) wire and the power is restored....until it happens again later.

Is this something I can do on my own. 

Is there a recall for this issue?

Thanks.

[22’s]

14 minutes ago, '14-1500 GMC said:

That's interesting, because when my truck stalls out after making a low speed turn I have to pull the negative (ground) wire and the power is restored....until it happens again later.

Is this something I can do on my own. 

Is there a recall for this issue?

Thanks.

I don’t think there’s a recall. I haven’t done it myself. I watched a YouTube video of a guy doing it in his driveway and seemed easy enough. 

[sk]

8 hours ago, '14-1500 GMC said:

That's interesting, because when my truck stalls out after making a low speed turn I have to pull the negative (ground) wire and the power is restored....until it happens again later.

Is this something I can do on my own. 

Is there a recall for this issue?

Thanks.

 

Sure you can do it yourself:

 

Also have your dealer look up PIT5405.

[Blbstack]

well guys I'm back...

 

its been 5 months after changing the negative battery cable twice, the battery, addressing the G218 ground and I am having the flickering issues like I mentioned before.

 

Also, the dealership addressed the power steering recall while it was in the shop, and I am still having the low speed power steering issues. 

 

The short / voltage drop is so random and it can go weeks - months before showing symptoms. I have to set up another appointment to get the issues looked at in the coming weeks.

 

Ill try and keep everyone updated, if something new pops up. But at this point I think it'll be that GM MYSTERY ELECTRICAL ISSUE that may never be resolved and just something that you either deal with or sell the truck..

 

 

[JADMAN416]

I had a similar issue with my wife's 2015 Silverado.  We checked the items listed in this TSB https://testing-public.carmd.com/Tsb/Download/112155/4318397   I found that the ground under the passenger side dash was the problem.  Its super easy to access with a screw driver and a 10MM socket.  Once under the dash i accessed the ground studs by removing the tweeters on both sides.  In my case I could clearly see that the ground wire had rubber stuck on it and was likely the culprit so don't forget to clean all ground contacts!!! terminals and studs.  Problem solved.  Good luck with yours if this is your issue. 

Edited October 27, 2019 by JADMAN416
forgot pics

[BlaineBug]

On 10/15/2018 at 3:07 PM, thedishking said:

Hello,

 

HighCountry17, did you ever get this resolved?

I have a 2018 Sierra Denali that is doing the exact same things as what you initially described.

 

I have now had my truck in twice (4400 miles of easy driving) and it is only 6 months old.

 

Saturday AM I was unable to drive it as it would not engage any gear, and the tach showed zero even with the engine running.

 

All gears acted like neutral (aside from park).

Dealer is telling me that they need their loaner back and they are unable to replicate the issue.

 

I did mention the TSB you provided above and they said that is simply a roadmap and they are not allowed to do anything until the problem is replicated.

 

I am really loosing confidence in my GMC pickup.

 

Thank you for your help.

Apologies for resurrecting an old thread, but there are a couple of us with 2019 model year Yukons and Suburbans have experienced the same issue with loss of transmission gears when the problem occurs.  With that being said you are the first TRUCK owner I have seen that also has the loss of forward and reverse gears as well.

Take a look at our thread here if you would like.

 

 

[John Bro]

All of this is just truly awful. I have a 2020 Sierra (Elevation) with warning lights and, one day, a totally dead batter. And to think that such major problems can result from some teensy bolt or gasket against something means these "tough" vehicles are now actually very fragile.

 

I do not associate GMC with reliability at all anymore.

 

If I go after them and get a decision in my favor I think Tundra is finally looking good. Sorry, America.

[Blbstack]

I’m back again. Lol

 

so I was able to tear apart the box that is on top of my battery that has all the main electrical connections, not sure what it’s called. I cleaned that metal distribution plate up and added some dielectric grease and have not had a single issue since. Call me lucky I guess? 
 

but now with 150,000 miles, I am dealing with transmission issues. 8l90. Major clunking when shifting from park to reverse and terrible slamming of gears. I’m sure it’s the torque converter failure that is common in these. Anyone have and good threads to guys experiencing this? Possible solutions? 
 

honestly I’m probably just going to run it until it will no longer drive. I can deal with the clunking. I don’t want to drop 3-5k on a reman.