Special Application Services
. Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi.
- Have underbody flushing service performed once a year.
See also:
Hands-Free Calling
1. Push . System responds:
“OnStar ready.”.
2. Say “Dial.” System responds:
“Please say the name or number
to call.”.
3. Say the entire number without
pausing, including a “1” and the
area c ...
Parking Brake
Set the parking brake by holding the regular brake pedal down, then pushing down
the parking brake pedal.
If the ignition is on, the brake system warning light will come on. See Brake
System Wa ...
STEP ON BRAKE TO RELEASE PARK BRAKE
For vehicles with the electric parking
brake, this message displays if you
try to release the park brake system
without first pressing the brake
pedal. See the electric parking
brake informa ...






