Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! My name is ***** ***** I can assist you with your question. This high idle is usually caused by an air or a vacuum leak or a bad/stuck idle air control motor. Usually it is one of these two things causing this high idle condition. However, sometimes the TPS can go bad causing this high idle as well and or the throttle body/plate/throttle cable could be sticking as well causing this too so just be sure to check this before replacing anything. Good luck and let me know if you have any further questions!