OnStar Services

See also:

Passive Door Unlock
If the vehicle has the RKE system, this feature allows you to select which doors will automatically unlock when you open the driver door with the RKE transmitter present. Press the MENU/SELECT kn ...

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 (Park). ...

Weight of the Trailering Combination
It is important that the combination of the tow vehicle and trailer does not exceed any of its weight ratings — GCWR, GVWR, RGAWR, Trailer Weight Rating or Tongue Weight. The only way to be sure i ...