Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi, welcome to Just Answer. I'm Ron and I will be helping you today
Clean the throttle body and idle speed motor attached to the throttle body and get all that carbon out of there. That's the most likely cause.
The shifting may be something else. Check trans fluid level and color first.
That's correct, or you can go one better and get Sea Foam that will allow you to do the complete engine too.
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Sorry to hear that, but the best way to find vacuum leaks is with a smoke machine attached to the intake.
Thanks again, Ron
Sure can, the engine runs off vacuum.