Climate Controls
The vehicle's heating, cooling, defrosting, and ventilation can be controlled with these systems.
Climate Control System
A. Fan Control
B. Air Delivery Mode Controls
C. Temperature Control
D. Outside Air
E. Front Defrost
F. Rear Window Defogger
G. Recirculation
H. Air Conditioning
Automatic Climate Control System
A. Fan Control
B. AUTO (Automatic Operation)
C. Air Delivery Mode Controls
D. Front Defrost
E. Recirculation
F. Temperature Control
G. Power
H. Driver and Passenger Heated Seats
I. Rear Window Defogger
J. Air Conditioning
See Climate Control Systems on page 8‑1 (If Equipped) or Automatic Climate Control System on page 8‑3 (If Equipped).
See also:
Cooling System
If the vehicle has the Duramax® Diesel engine, see the Duramax® Diesel Supplement for more information.
The cooling system allows the engine to maintain the correct working temperature.
5.3 L En ...
Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnS ...
Security Light
The security light should come on briefly as the engine is started.
If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your deale ...