10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
6,491 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.

2020 GMC Sierra 1500 electrical problems

electrical problem

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2020 GMC Sierra 1500 Owner Comments (Page 4 of 4)

« Read the previous 20 complaints

problem #7

Aug 242020

Sierra 1500

  • 73 miles

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

Electronic ABS brake failure with 73 miles on odometer while stopped at red light alarm chimes sounded and power brakes were lost. Warning lights on dash ABS brake failure multiple engine warning lights came on. Dealer service was puzzled needed to contact GM technical support. Final outcome they are replacing the electronic brake module.

- Kearny, NJ, USA

problem #6

Aug 122020

Sierra 1500

  • 4,000 miles
At 550 miles had to tow to dealer. They said needed to reprogram transmission. Now at 4000 miles, went to start and vehicle will not do anything. No power. It is being towed to dealer again. Pretty much bought a lemon as it looks now.

- North Richland Hills, TX, USA

problem #5

Jul 182020

Sierra 1500

  • 5,100 miles
Battery was dead in the garage. Called road side assistance who jump-started car. Car would not go into gear. We rolled it out into driveway where it sat for 24 hours. When it was loaded for travel to dealership, it cranked and was driven up on wrecker trailer like it had no apparent problems. Was carried to dealership where they recharged and checked the battery and reset 14 different codes which were lost with the low voltage.

- Etoile, TX, USA

problem #4

Jul 022020

Sierra 1500

  • 3,500 miles

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

Brand new truck purchased in May 2020. Vehicle would not start on 7/2/2020 and a new battery was placed in the vehicle. The truck would not start again on 7/17/2020 unknown reasons...

- Lima, OH, USA

problem #3

Apr 292020

Sierra 1500

  • 15 miles
Review camera is extremely bright when backing. It's so bright that a glare is thrown onto rear window making it next to impossible to see out rear window or use side view mirrors. I often revert to to open drivers door and looking backwards that way. Someone is going to get run over as you cannot see where you are backing. Very dangerous!

- Saranac Lake, NY, USA

problem #2

Feb 172020

Sierra 1500

  • 168 miles
Smell of smoke strong in the cab and outside hood of truck. Also have seen smoke coming from hood of truck. Smells like burning electrical or plastic

- Greensburg, PA, USA

problem #1

Feb 102020

Sierra 1500

  • 144 miles
Brand new truck. Stuck at the gym in the middle of the night truck wont start. The interior lights, head lights, and radio wont shut off. Vehicle wont start. I'm assuming the battery was drained because interior lights, exterior lights, radio, wont shut off. Has to be some kind of electrical malfunction. Waiting on GM roadside.

- Mesa, AZ, USA

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