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10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 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.

2021 GMC Terrain drivetrain problems

drivetrain problem

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2021 GMC Terrain Owner Comments

problem #4

Oct 062023

Terrain

  • miles

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

When accelerating from a stop between 35-45 mph the steering wheel shakes and you feel a vibration coming from the front wheels. I thought the wheels were loose and were about to come off.

- Berlin, CT, USA

problem #3

Mar 172022

Terrain

  • miles
The contact owns 2021 GMC Terrain. The contact stated upon starting the vehicle and attempting to shift the vehicle to drive, the vehicle inadvertently reversed. The contact depressed the brake pedal. There were no warning lights illuminated. The contact stated that the gear shift selector was stuck in park(P) position while the instrument panel was displaying that the vehicle was in neutral. The vehicle was towed to the dealer who informed the contact that they could not replicate the failure; however, the vehicle remained under observation at the dealer. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was unknown. The VIN was not available.

- Muscatine, IA, USA

problem #2

Aug 302021

Terrain

  • miles
My 2021 gmc terrain with 6000 miles on odometer. When driving up hill or going around corner transmission shudders so bad that it feels like front tires are coming off. I contacted the dealer and gm and was told there is a tsb for this complaint. GM and dealer acknowledged there was a problem but they didn't have a fix or known cause of problem

- Alto, MI, USA

problem #1

Jul 192021

Terrain

  • miles
When driving car starting from a red light/getting on freeway or after making turn from a stop light when accelerating between 45 and 60 car shakes when shifting. Problem is getting worse. Car only has 6000 miles on it. I reported it to local gmc dealer and I was told GM is aware of the problem and they do not have a solution. They mentioned there is a TB out for several models that customers have reported same problem

- Alto, MI, USA

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