Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Engine Cooling System Messages
A/C OFF DUE TO HIGH ENGINE TEMP
This message displays when the engine coolant becomes hotter than the normal
operating temperature. To avoid added strain on a hot engine, the air conditioning
com ...
Ignition Transmission Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
• The ignition should turn to
LOCK/OFF only when the shift
lever is in P ( ...
Overview (Radio with CD/DVD and MEM)
A. VOL/
• Turns the system on or off
and adjusts the volume.
B. FAV
• Radio: Opens the
favorites list.
• MEM: Opens the
favorites list.
C. Buttons 1 to 6
• Radio: Saves and sele ...