Here'* what GM Service Info says:
Originally Posted by NashRCracer
thanks I was afraid of that I got the nice flashing temp and all cold air till it warms up if it does at all. any ideas on how much the dealer would charge to replace the acctuator?
Was the Powertrain On-Board Diagnostic (OBD) System Check performed?
Go to Step 2
Go to the A Powertrain On Board Diagnostic (OBD) System Check
Are any PCM DTC(*) stored?
Diagnose DTC(*) first. Go to Powertrain Control Module Diagnosis (Powertrain DTCs)
I need any & all DTC codes first to help you further.