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.
Lifter noise in the left bank! Scary cause the replace push rod on this thing when it had only like 15K miles on it and now it has 60K and valve train makes noise and dealer "cant here anything"! Crazy I thought they were GM certified, i am not but definetly can here it strange I have it in the shop now if they will not be able to here it I will have to trade this piece of sh*t for something else and let some one else to take over on it even thou I hate to do this but have no choice! Any input on it please let me know.
Well my 2007 suburban... just get it like a month ago now and it makes so much engine noise ....if you're on the phone you can't here yourself, it's that loud.
- Nigel R.,
Bloomfield, NJ, US
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Lifter noise in the left bank! Scary cause the replace push rod on this thing when it had only like 15K miles on it and now it has 60K and valve train makes noise and dealer "cant here anything"! Crazy I thought they were GM certified, i am not but definetly can here it strange I have it in the shop now if they will not be able to here it I will have to trade this piece of sh*t for something else and let some one else to take over on it even thou I hate to do this but have no choice! Any input on it please let me know.
- Victor S., Lebanon, OR, US