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 the vehicle is equipped with the Tire Pressure Monitoring
System. If a diagnostics check is needed between e-mails, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationStarting the Engine
Place the transmission in the proper gear.
Notice: If you add electrical parts or accessories, you could change
the way the engine operates. Any resulting damage would not be covered by the vehicle
warranty.
Automatic Transmission
Move the shift lever to P (Park) or N (Neutral). The engine wi ...
Inflatable Restraint Steering Wheel Module Coil Centering
Caution: The new SIR coil assembly will be centered. Improper
alignment of the SIR coil assembly may damage the unit, causing an
inflatable restraint malfunction.
Verify the following conditions before centering the supplemental
inflatable restraint (SIR) steering wheel module co ...
Stationary Window Waterleak Repair
Note: If any water enters the vehicle interior up to the level of
the carpet or higher and soaks the carpet, the sensing and diagnostic
module (SDM) and the SDM harness connector may need to be replaced. The SDM
could be activated when powered, which could
cause deployment of the air bag(s) an ...