4.2

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,760 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2015 GMC Sierra 3500 electrical problems

electrical problem

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2015 GMC Sierra 3500 Owner Comments

problem #4

Oct 042022

Sierra 3500

  • miles

A D V E R T I S E M E N T S

The service trailer brake icon keeps appearing on my screen I-??m afraid it-??s going to not work properly when towing trailers it-??s constantly going on and off I believe it-??s the brake control module switch but also could be in the harness just want Gm to be aware of the many blogs that I have read about with this problem The problem first appeared about two months ago

- Reno , NV, USA

problem #3

Apr 192019

Sierra 3500

  • 51,040 miles
The communications quit working, I can not use the hands free on my phone

- Palm Springs, CA, USA

problem #2

Oct 022015

Sierra 3500

  • 50,000 miles
This vehicle has had numerous electrical issue from the first few months of ownership. The trailer brake system failed and was replaced on October 2014. The vehicle has had many recalls that have been corrected by owner and service provider. The second summer of ownership the vehicle had radiator issues, and most recently electrical issues again and transmission issues. While driving the vehicle electrical dashboard goes into a flicker and shuts down. GMC was able to fix this issue at the owners cost with the vehicle being out of service for 3 weeks. GMC was to reimburse the owner for costs of a GM dealer that was not able to fix the issue (painter automotive)(February 9, 2017) of $300, this has not been reimbursed. The vehicle is now at the service station as it does not start with no codes. It has been out of service for 2 weeks and counting, this vehicle is no longer reliable or safe for us to drive. We have documentation of all the issues and video of the dashboard flicker.

- Park City, UT, USA

problem #1

Oct 012014

Sierra 3500

  • 10,000 miles
The contact owns a 2015 GMC Sierra 3500. The contact stated that a snow plow was installed by a dealer however, after the installation, the instrument panel was dim and the headlights failed to illuminate. The technician uninstalled the snow plow and the vehicle resumed to function as normal. The technician then reinstalled the snow plow a second time but the failure recurred. The manufacturer was made aware of the failure. The failure mileage was 10,000.

- Gilboa , NY, USA

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