My Yukon SLT idles high when I turn a/c button on

teesmith88teesmith88 Member Posts: 1
edited February 2015 in GMC
My 1999 Yukon idle will change when I press the a/c button. The idle will go up for a about 2 seconds then return to its normal rpms. This only happens with the a/c button pushed in / on, this happens while in park and while in drive. I have replace the throttle position sensor and the idle air control valve and still have the same problem. If I turn the a/c button off and leave the fan blowing the idle runs at normal rpms without any change. At this point I am open to any suggestions.
Tagged:
Sign In or Register to comment.

Helpful Tools

Most popular vehicles

Your Privacy

By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our Privacy Statement, and you agree that your use of the website is subject to our Visitor Agreement.