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:
AM
The range for most AM stations is
greater than for FM, especially at
night. The longer range can cause
station frequencies to interfere with
each other. For better radio
reception, most AM r ...
Automatic Dimming Rearview Mirror
The vehicle may have an automatic dimming inside
rearview mirror with OnStar® and/or a compass
display. Automatic dimming reduces the glare from
the headlamps of the vehicle behind you. The dim ...
If No Steam Is Coming From YourEngine
If you get an engine overheat warning but see or
hear no steam, the problem may not be too
serious. Sometimes the engine can get a little too
hot when you:
• Climb a long hill on a hot day.
â ...
