1.6

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

2011 GMC Sierra 2500 drivetrain problems

drivetrain problem

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2011 GMC Sierra 2500 Owner Comments

problem #1

Sep 282016

Sierra 2500

  • 106,191 miles

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

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

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