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 the
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and
an Advisor can run a check.
See also:
Resuming a Set Speed
If the cruise control is set at a desired speed and then the brakes are applied,
the cruise control is disengaged without erasing the set speed from memory.
Once the vehicle speed reaches about 40 ...
Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel
nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced.
If the wheel leaks air, replace it ...
Rear Wiper Blade Replacement
1. Lift the wiper blade assembly up and out of the park rest position.
2. Pull the wiper blade assembly away from the backglass. The backglass wiper
blade will not lock in a vertical position, so ...