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.
It has been a nightmare buying the Chev suburban 07 LTZ, first had to change the master cylinder at 6100miles then transmission at 82000. Check engine light showed up at 97000miles. Replaced transmission sensors by the dealership, replaced front shocks and struds, now the odometer panel has blanked out. looks like trouble after trouble. Poor job by GM that is for sure. I have Lincolns and they are trouble free.
A D V E R T I S E M E N T S
It has been a nightmare buying the Chev suburban 07 LTZ, first had to change the master cylinder at 6100miles then transmission at 82000. Check engine light showed up at 97000miles. Replaced transmission sensors by the dealership, replaced front shocks and struds, now the odometer panel has blanked out. looks like trouble after trouble. Poor job by GM that is for sure. I have Lincolns and they are trouble free.
- jhameed, Fort Worth, TX, US