CarComplaints.com 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.
When the oil pressure sensor doesn't work properly the oil pressure gauge drops to zero and the bell rings constantly. then it will go back to normal. it is random and annoying. It is a costly problem to repair. Not to mention the fact that with this make and model you are constantly worried about the engine oil as it runs dry before it is time for another oil change. This SUV burns oil like crazy!!!!
A D V E R T I S E M E N T S
When the oil pressure sensor doesn't work properly the oil pressure gauge drops to zero and the bell rings constantly. then it will go back to normal. it is random and annoying. It is a costly problem to repair. Not to mention the fact that with this make and model you are constantly worried about the engine oil as it runs dry before it is time for another oil change. This SUV burns oil like crazy!!!!
- Sandra H., Mechanicsburg, PA, US