NewOrleansLT1

I have a 2008 Silverado with 5.3 and it has a rough idle in park or gear and sometimes it causes the stabilitrac or traction control light to come on.. It just recently throwed a cylinder 2 misfire code that I cleared.. Ive done a lot of research and tons of people have this same problem with their AFM GM V8 also.. But it doesn't seam to have a clear solution.. I just want to see what's your thoughts before I start throwing parts at it..

hellbents10

iTrader: (10)

Disable AFM, SeaFoam the intake and drive it for a while. Sometimes they come around and start running smooth and pick up power. Your AFM cylinders are completely cooked with oil and carbon deposits right now.

NewOrleansLT1

That totally make sense now that I think about it.. I disabled the AFM about 3 weeks ago and I ran a full bottle of B-12 with a half tank of gas and it seams to have gotten a little better.. I'll try the sea foam method too.. Thanks..