Just today I got snookered (I found out later – I feel so dumb) into getting an Engine Flush on my 2002 Silverado. Good history of oil changes. The $50 I can chalk up to experience. Not worried about that. What I AM worried about is that apparently I may have permanently damaged my engine and ma…

Engine Flush - GM Technical Service Bulletin

texases March 25, 2012, 11:30pm 5

I’d 1) find a good independent shop to do your oil changes, no chains, then 2) get it changed in a week or two. I would not worry about it.