Back in the end of November 2 of my lifters collapsed on my 08 hybrid.... I had it towed to Lunghamer (GM dealer) in Waterford MI and had them replace all the lifters, along with installing new plugs and new wires since they were in the engine anyway....cost over $5k

since it it started getting warmer here in Michigan I started to notice a little white smoke on start ups... paid no attention really at first... now it’s like every start up and heavier smoke... and it’s only on start ups...

can anyone advise what what the issue is? Did the dealer screw up something as it wasn’t doing this prior?

Oh and I’ve only put 10k on the engine since the repair at the dealer ...

any help or direction ion would be greatly appreciated!!!

 

Does that engine have the AFM system?

 

AFM being active fuel management... yes

 

How many miles on the engine total?

 

149k in relation to miles

 

What warranty did you get with the work?

 

When my 09 started puffing smoke at startup I knew it had started burning oil. There’s no kidding yourself around it and I’m not saying you are, but I did. It got worse till it was burning a qt of oil every 500 miles. Soon your lifters will start “ticking” at startup, if they haven’t already, and then go away and you’ll hope it was nothing. After you change oil it will go away a while then it will start to come back. If you’re hoping the ticking will go away there is also something I learned; engines don’t fix themselves. Once the lifter damage is done it will only get worse.
Started doing research and then the AFM cat was out of the bag. 08-10 were the worst years I heard.
I read stories of guys sticking $4-6k into those stinking engines every 50-60k miles. Either pay all the labor to fix or replace the whole engine. My 09 had 53k on is all. Talk about a crappy design.
I sent mine down the road last year for a ‘17 Burban. Unfortunately they still have all this AFM crap but hopefully in a more dependable build. I drive mine in M5 so AFM is not kicking in and out while daily driving. I probably should have looked into an AFM delete on my old 09, but too late for that. Good luck with it, I think I know what’s happening with it but hopefully I’m wrong.