Re: rubbing/grinding noise on startup, chevy says its NORMAL!?!?
This is not to be confused with the grind on startup, right? The grind that sounds like the engine is starved of oil? My 3.7 has done this on cold starts since new, and I've been told it's normal (something about a tensioner going back into place?). It sounds awful, but GM claims it's not an item of concern or causing any undue wear on the engine.
2009 Chevrolet Colorado Z71 Crew Cab 4x4