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 InformationSteering Gear Boot Replacement
Special Tools
CH-804 Drive Axle Seal Clamp Pliers
Removal Procedure
Remove the steering linkage outer tie rod. Refer to Steering Linkage Outer
Tie Rod Replacement.
Remove the steering linkage inner tie rod nut (1).
Remove the steering gear outer boot clamp (2).
Loosen the st ...
Brake Pedal Position Sensor Calibration
Calibration Criteria
Note: Do not apply the brake pedal during the brake pedal position
(BPP) sensor calibration procedure. Any movement of the brake pedal
during this procedure will cause the calibration procedure to fail. If this
occurs, the sensor calibration must be repeated.
Brake pedal ...
Tire Pressure
Tires need the correct amount of air pressure to operate effectively.
Notice: Neither tire underinflation nor overinflation is good.
Underinflated tires, or tires that do not have enough air, can result in:
• Tire overloading and overheating which could lead to a blowout.
• Premature or irregula ...