See also:

Remote Keyless Entry (RKE) System
The RKE transmitter is used to remotely lock and unlock the doors from up to 60m (195 ft) away from the vehicle. : Press to unlock the driver door. Press again within three seconds to unloc ...

Engine Oil
For diesel engine vehicles, see “Engine Oil” in the Duramax Diesel Supplement. To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these si ...

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 9‑112. Added electrical equipment ma ...