Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless service carrier.
• Press
to answer an incoming call when another call is active. The original call is placed on hold.
• Press
again to return to the original call.
• To ignore the incoming call, no action is required.
• Press
to disconnect the current call and switch to the call on hold.
See also:
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the
vehicle has a diesel engine and/or an Allison Transmission, see the maintenance schedule section in the DURAMAX®
Diesel ...
Leaving the Vehicle with the Engine Running
WARNING
It can be dangerous to leave the vehicle with the engine running.
The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. And, if you l ...
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 on page 9‑64.
Added electrical equipment ...





