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.
My engine light came on and I called On Star to diagnose the problem. They said it was possibly a leaking gas cap. Replaced it...was not the problem. Had the evaporative charcoal filter changed...not the problem. Had the dye put through the emission system and the local repair shop (Firestone) replaced four O2 sensors and the receiving end of the gas tank neck where the gas cap screws onto @ a the tune of $1300.00.....light came back on two days later. Now, right after I fuel up the damn thing doesn't want to start up. Have to wait about five minutes then it would start after one or two tries. Something has to be done, GM shouldn't get away with this......
A D V E R T I S E M E N T S
My engine light came on and I called On Star to diagnose the problem. They said it was possibly a leaking gas cap. Replaced it...was not the problem. Had the evaporative charcoal filter changed...not the problem. Had the dye put through the emission system and the local repair shop (Firestone) replaced four O2 sensors and the receiving end of the gas tank neck where the gas cap screws onto @ a the tune of $1300.00.....light came back on two days later. Now, right after I fuel up the damn thing doesn't want to start up. Have to wait about five minutes then it would start after one or two tries. Something has to be done, GM shouldn't get away with this......
- Bryan G., Saint Gabriel, Louisianna, US