definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
33,000 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.

2007 GMC Sierra engine problems

engine problem

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2007 GMC Sierra Owner Comments

problem #2

Jul 182012


  • 30,000 miles


2007 GMC crewcab Sierra with 5.3 liter, auto, has had three plastic fuel line failures in last two years. After detecting a fuel odor, gas was found to be dripping/sprayed in the area of the exhaust pipe. Appears to be a fire risk. Same truck was delivered with warped flex plate, and has experienced major and repeated A/C failures. This truck is driven by a 50's female, has never towed, been off road etc. It is at a repair shop but has about 35000 miles on it.

- Key Largo, FL, USA

problem #1

Oct 132011

Sierra 4WD 8-cyl

  • 36,000 miles
5.3 vortec with afm is now burning oil at the rate of 1 qt every 800-1200 miles. The more highway driving the more oil it burns. GM is very aware of the issue and just refuses to make the proper repairs volunteerly, but is more than happy to put the customer through all kinds of bs. Will start the oil consumption test, tomorrow. If that fails the dealer told me they will try the oil shield fix and if that fails, they will replace pistons and rings. Seems like a huge waste of time when they know there is a major problem.

- Schaumburg, IL, USA

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