i have a 04 silverado 1500 Z71. my truck is idling really low when i am at a stop light or trying to turn the wheel. i have already had everything cleaned at the chevy dealership but no dice. the check engine light came on while pulling out of the parking lot. i have a few ideas but dont want to spend the money if they wont make a differance. anything anyone can help with will be more than appreciative.

 

You have to read the check engine light to find out the problem. If you don't have a code reader, go to Autozone and they will read it for you for free.