1.6

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
106,191 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2011 GMC Sierra 2500:

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

problem #1

Sep 282016

Sierra 2500

  • 106,191 miles
Vehicle was exhibiting harsh shifting; upshifts/downshifts. Pulling into driveway from rural highway vehicle downshifted and passenger was thrown forward and almost hit the dash with her head, felt like it was shifting into park. Had vehicle towed to dealership. Vehicle would not shift into any gear for mechanic. Transmission repaired along with a wiring harness that prevented the main computer to communicate with the transmission. Reporting this because this is dangerous if this wiring harness fails as we could be out in the middle of nowhere with a vehicle that will not drive. Attaching invoice of repairs that show what parts were replaced by the dealer.

- Grand Ronde, OR, USA

Add Complaint