See also:

Programmable Locking Feature
Following are the two locking modes that can be programmed: Mode 1: All doors lock when the transmission is shifted out of PARK (P). Mode 2: All doors lock when the vehicle speed is greater t ...

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 ( ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...