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.


really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 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 exhaust system problems

exhaust system problem

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2007 Chevrolet Suburban Owner Comments

problem #1

Apr 152008


  • miles


We have a 2007 Chevy Suburban it starting using excess oil around 21,000 miles when have had 2 oil consumption test done at the dealer. They replaced value seals 1,4,7,6..then started another oil consumption test. Low and behold it lost a quart at 1750 miles. They are now looking at replacing lifters...we currently have 33,000 miles on the vehicle..have to keep running back every 500 miles to get this check. At first they kept saying normal to lose a quart of oil but now realize it is not normal..have yet resolved the issue. Very upsetting to have a new vehicle and paid $48K and have to keep returning to the repair shop. We have looked up on the internet and it seems there has been many issue with this vehicle..

- St Francis, WI, USA

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