Here's a new question
My 98 Jimmy 4x4 AT 4.3 sometimes hesitates at 70mph.
It has 105,000 miles.
I had the plugs changed and a new fuel filter installed.
It still does it. It does not set any codes.
Could it be a problem in the transmission??
I have 2,000 miles left on an after market warranty plan and would like to
get this diagnosed and fixed soon.