5.5

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
16,400 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 fuel system problems

fuel system problem

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2012 GMC Sierra 3500 Owner Comments

problem #1

May 162013

Sierra 3500

  • 16,400 miles

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

While pulling my fifth wheel trailer 12500# at highway speed 65 mph pulling a grade the check engine light came on and the reduced engine power message appeared on the dash. This reduced and limited the speed to 50 mph and steps the truck down from there until you can only do 20 mph on the interstate. This issue has happened three times in three months.

- Wyoming , NY, USA

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