1998 GMC Safari Owner's Manual - Page 106

NOTICE: If your rear wheels can't rotate, don't to try drive. This might happen if you werestuck in very deepsand or mud or were up against a solid object. You could damage your transmission or transfer case or both. Also, if you stop when going uphill, don't hold your vehicle there with only the accelerator pedal. This could overheat and damage the transmission. Use your brakes or shift into PARK (P) to hold your vehicle in position on a hill. Parking Brake To set the parking brake, hold regular brake pedal the down with your right foot. Push down the parking brake pedal with your left foot. If the ignition on, the brake system warning light will is come on. To release the parking brake, hold the regular brake pedal down. Pull brake release lever located on the the lower left side of the steering column. 2-22