Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Chevrolet for this TSB. Call your local Chevrolet dealer's service department & ask for a copy of TSB# PIE-0434A.
Engineering Information – A/C Blows Warm After Driving, Blows Warm Intermittently or Inoperative
Condition Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this
EI.
Some customers may comment that the A/C blows warm after driving, blows warm intermittently or A/C is inoperative.
Cause GM Engineering is attempting to determine the root cause of the above condition. Engineering has a
need to gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be used to "root cause" the customer's concern and develop/validate a field fix.
Correction
If you encounter a vehicle with the above concern, gather the following information and contact one of the engineers listed below:
• Pressure readings on high and low side.
• The ambient temperature when the customer experienced the condition.
• Customer operating condition.
• Service bay ambient temperature.
• Evaporator Temperature and Target from MDI.
• The model of the recovery machine.
