Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000mi.Have underbody flushing service performed. See "Underbody Maintenance" inExterior Care.
Power Mode Description and Operation
GMLAN and Media Oriented Systems Transport (MOST) Wiring RepairsEPB Release
To release the EPB:
Turn the ignition on, or to ACC/
ACCESSORY.
Apply and hold the brake
pedal.
Press the EPB switch
momentarily.
The EPB is released when the
or PARK light is off.
If the light is on, release the
EPB
by pressing and holding the EPB
switch. ...