Guys,
I have a little chit chat with my Service Guy at the dealship. And we agreed on something
Please do not anticipate this problem.
Rough Idle without the check engine light can be a multitude of things.
Same goes for the Check engine light without the rough idle.
Rough idle with check engine light? Then you are in the head replacement club.
If it happens it
will get fixed.
If you dodged a bullet like me, you'll have enjoyed your time with your
HUMMER and not have fretted over every mile.
Life is short, just drive it.