GMC Repair: Denali High Idle, yukon denali, gm dealership

Question
I have a 2002 Yukon Denali that idles high when the air conditioning is initially turned on.  After a few minutes it is ok, but for the first few minutes it blows both hot and cold air.  Recently I had the throttle flushed and it took care of the problem temporarily.  Any suggestions?

Answer
Hi
I would recommend taking it to EITHER your local GM dealership OR to a shop that has reprogramming capibilities.
The Throttle should be cleaned using GM Top Engine Cleaner and a rag,  AND there is a new program for correcting this issue. So you need a clean and reprogram the PCM for Throttle Coking.
I Hope this helps.
Good Luck
Pawl