2007 GMC Savana Van Owner's Manual - Page 125

Automatic Transmission Operation There are several different positions for your shift lever. PARK (P): This position locks your rear wheels. It is the best position to use when you start your engine because your vehicle cannot move easily. CAUTION: (Continued) move, even when you are on fairly level ground, always set your parking brake and move the shift lever to PARK (P). See Shifting Into Park (P) on page 129. If you are pulling a trailer, see Towing a Trailer on page 266. Make sure the shift lever is fully in PARK (P) before starting the engine. Your vehicle has an automatic transmission shift lock control system. You must fully apply your regular brakes before you can shift from PARK (P) with the ignition in RUN. If you cannot shift out of PARK (P), ease pressure on the shift lever and push the shift lever all the way into PARK (P) as you maintain brake application. Then move the shift lever into another gear. See Shifting Out of Park (P) on page 130. {CAUTION: It is dangerous to get out of your vehicle if the shift lever is not fully in PARK (P) with the parking brake firmly set. Your vehicle can roll. Do not leave your vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure your vehicle will not CAUTION: (Continued) 125