3.6

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
35,900 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.

2012 GMC Sierra 3500 miscellaneous problems

miscellaneous problem

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2012 GMC Sierra 3500 Owner Comments

problem #1

Oct 052017

Sierra 3500

  • 35,900 miles

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

The GMC Sierra 3500hd while in regeneration mode funnels exhaust directly into the cab through the vents. While GM recognized this as a flaw and came up with a fix for it, they will only repair it in a 5 year or 100,000 mile window. How is this not a safety issue without an expiration?

- Altamont, NY, USA

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