See also:

Front Turn Signal Lamp (Base and Uplevel)
To replace the Front Turn Signal Lamp: 1. Remove the turn signal lamp bulb socket from the headlamp assembly. 2. Remove the turn signal lamp bulb from the socket. 3. Replace the bulb in the bulb ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...

How to Check
Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation cannot be determined by looking at the tire. Check the tire inflation pressure when the tires are cold meaning th ...