OnStar Overview
EmergencyRecommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise, commonly referred
to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.
If hea ...
Cruise Control
For vehicles with cruise control:
: Press to turn the cruise control system on and off.
RES/+: Move the thumbwheel up to resume a previously set speed or to accelerate.
SET/−: Move the thumbwheel down to set a speed or to make the vehicle decelerate.
: Press to disengage cruise contro ...
Power Door Latch Description and Operation
Power Door Latch System Components
The power door latch system consists of the following components:
Remote control door lock receiver
Body control module (BCM)
Driver door latch
Passenger door latch
Left rear door latch
Right rear door latch
Door handle assemblies
Power Door Lat ...