Hi I just had a California smog check and the truck pass, but when driving I slow down the rpm's drop noticeably and you can feel it too. Does not stall. no check engine light. Should I be concerned. 2006 chevrolet Colorado

What is your question?

2006 Chevrolet Colorado Hi I just had a California smog check and the truck pass, but when driving I slow down the rpm's drop noticeably and you can feel it too. Does not stall. no check engine light. Should I be concerned.

What makes this problem better or worse?

neutral no change --- 75000 original miles

How long has your 2006 Chevrolet Colorado had this problem?

A few weeks I guess