Automatic Transmission Shift Lock Control Function Check

GMC Sierra / GMC Sierra Owners Manuals / Vehicle Care / Vehicle Checks / Automatic Transmission Shift Lock Control Function Check

WARNING
When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake.

See Parking Brake on page 9‑58.

Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the ignition on, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

    See also:

    Safety
    All-disc antilock brakes and daytime running lights are standard, but side-impact airbags are not available. ...

    Highway Hypnosis
    Always be alert and pay attention to your surroundings while driving. If you become tired or sleepy, find a safe place to park the vehicle and rest. Other driving tips include: ○ Keep the ve ...

    Increasing Speed While Using Cruise Control
    If the cruise control system is already activated: • Press and hold the +RES button on the steering wheel until the desired speed is reached, then release it. • To increase vehicle speed in smal ...