8.1

pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
4,842 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.

2018 GMC Sierra 1500 electrical problems

electrical problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2018 GMC Sierra 1500:

Unsubscribe any time. We don't sell/share your email.

2018 GMC Sierra 1500 Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #4

May 022021

Sierra 1500

  • miles

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

Check engine came on and says manufacture specific issues/codes. Safety restrain system. P10e4

- Midlothian, TX, USA

problem #3

Nov 202019

Sierra 1500

  • 27,000 miles
The first thing that happened was that all of the electrical systems on my truck went out and my truck would not start. It finally started but it would not move finally it would move but very slowly this happened on 11/20/2019 I have documentation through onstar for this incident. My brakes started slipping on 07/01/2020 and still do not work properly. My transmission has never shifted correctly. When I accelerate or when I slow down there is a shudder and a jerking sound. After sitting for a while when my truck is put in reverse it hesitates and then seems to jump into gear.

- Owens Cross Roads, AL, USA

problem #2

Jan 042020

Sierra 1500

  • 12,000 miles
My truck locked itself with the engine running when I was parked in the driveway. Also have had the back driver side window roll itself down part ways without me initiating it. Another occasion I put the truck in gear to drive position and the brake or something had it locked preventing me from moving either direction ie; drive or reverse. Was then parked in home garage and attempting to back out.

- Mooringsport, LA, USA

problem #1

Dec 022017

Sierra 1500

  • 200 miles
My vehicle is hacked anytime I am driving the vehicle I am not in full control. The vehicle steers itself left or right while driving, the brakes are always on while driving sometimes braking harder but always on. The infotainment system has many glitches. This vehicle has been back to the dealership more than 15 times has been out of service over 35 days GM even flew a engineer/tech to inspect the vehicle and says they couldnt find anything. Therefore this vehicle is hacked there are so many issues and glitches and the fact that the truck only acts like this when I am driving no one else. Like it can be turned on and off instantly. I have tons of videos pictures and supporting documents backing this. I need help this is a serious issue and there is so much more to it than I can type here someone please get ahold of me to help or point me in the right direction. This vehicle will be returned to GM soon as they are doing a vehicle replacment per all the issues but this needs further attention because if this can happen to me it can happen to anyone. Please help

- Pasco, WA, USA

Not what you are looking for?