1998 GMC Sonoma Owner's Manual - Page 87

Shifting Into PARK (P) (Automatic Transmission Only) 2. Move the shift lever into PARK (P) position like this: 1A CAUTION: I - It can be dangerous to get out of your vehicle if the shift lever is not fully inPARK (P) with the parking brakefirmly set. Your vehicle roll. can If you have leftthe engine running, the vehicle can move suddenly.You or others could be injured. To be sure your vehicle won't move, even when you're on fairly level ground, use the steps that follow. Always put the shift lever fully in PARK (P) withthe parking brake firmly set. If you're pulling a trailer, see "Towinga Trailer'' in the Index. 1. Hold the brake pedal down with your right foot and set the parking brake. i:T I Pull the lever toward you.