Print this page Notes: Engines shouldn't need a new quart of oil every 500-1000 miles, but for thousands of Suburban owners that's exactly what's happening. Engine oil consumption on aluminum block engines with Active Fuel Management (AFM) is out of control and owners are left looking for answers.

The most likely culprit is an uncovered AFM valve which, in many cases, can be covered under warranty. The problem is the issues don't stop there and many owners have been told by GM just to buy a new engine. Take one guess who they want to pick up the tab.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
98,139 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 Chevrolet Suburban fuel system problems

fuel system problem

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2007 Chevrolet Suburban Owner Comments

problem #1

Jan 172008

Suburban 8-cyl

  • Automatic transmission
  • 98,139 miles


I drove 287 mi. To las vegas and on the return trip after filling up the tank. I drove 64 mi. @76 mph where I came to a town where reduce to 25 mph required and at the end of town the speed increase to 35 mph for a mile and 45 mph for a mile and as I tried to increase my speed to 60 mph the car started to sputter for a 1/4 to 1/2 mile and the engine failed (stopped) after the engine power fail I pulled off road and tried to start the truck without on result for the engine. I call nhp to help with my location and tow. I needed to get home by the next day I called vista Chevrolet for service and could not do the work the same day I used and independent to replace my fuel pump which was ordered from the dealer.

- Indio , CA, USA

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