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.
6.8
fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
9,545 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.
While driving approx. 20 miles an hour there was a loud thud and the service engine light and the traction control light both came on at the same time. The engine began to miss on acceleration and shifting between 1st and 2nd gears was so rough it shook the truck. The truck is only 6 months old and has 9, 000 miles on it. The Suburban was driven to the dealership for repairs it took 3 days for them to diagnose computer relay was affecting the traction control system and #7 cylinder had seized. The entire cam shaft is going to be replaced. Est. Work will take 7-10 days.
- Amarillo, TX, USA
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- Amarillo, TX, USA