I have a 2008 Chevy Equinox, and have had issues with the air conditioner for a while (see my other post: http://community.cartalk.com/discussion/comment/2957278#Comment_2957278).
Lately, if the car is stopped in traffic or at a red light, I cannot get any cold air. The compressor will turn on, but only 2-3 seconds, then it shuts back off. It will cycle like this, on and off, about every 10-15 seconds while I am stopped. Each time this happens, the RPMs jump and the car lurches forward a little as well. As soon as I start moving at a decent speed (20 mph or so), the air gets cold again.
The recommendation from my other thread was to replace the heater control module - do you think replacing that part would fix this too, or is something else going on here?
Thanks for any suggestions!