My 97 J30 recently had its battery disconnected for a couple days. A while later the check engine light came on. Checked the code - idle air control valve. My mechanic friend thinks that the idle air needs reprogramming. He also thinks it has to be done at a dealer.
Does this have to be done at a dealer (they want ~$100)? Is this accomplished with a drive sequence (i.e., can I try doing it myself)?
Thanks for your help.
Evan
