1995 GMC Yukon Owner's Manual - Page 93

A CAUTION: It is dangerous to getout of your vehicle if the shift lever is not fully inPARK (P) with the parking brake firmly set. Your vehicle can roll. Don't leave your vehicle whenthe engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly, You or others could beinjured. To be sure your vehicle won't move, even when you're on fairly level ground, always set your parking brake andmove the shift lever to PARK (P). If you have four-wheel drive, your vehicle will befree to roll even if your shift lever is in PARK (P) - if your transfer case is in NEUTRAL (N), So, be sure the transfer case is in a drive gear, or two-wheel high (2H) four-wheel high (4H) or four-wheel low (4L) - not in NEUTRAL (N). See "Shifting Into PARK (P)" in the Index. If you're pulling a trailer, see "Towinga Trailer" in the Index. Your vehicle has a brake-transmission shift interlock. With the ignition in the RUN position, you must fully apply your regular brakes before you can shift from PARK (P). I f you cannot shift out of PARK (P),ease pressure on the shift lever and push the shift lever a11 the way into PARK (P) as you continue pressing the brake pedal. Then nwve the shift lever into the gear you want. If you still cannot shift the shift lever out of PARK (P), see "Shifting Out of PARK (P)" later in this section. 0 REVERSE (R) - Use this gear to back up. NOTICE: Shifting to REVERSE (R) while your vehicle is moving forward could damage your transmission. Shift to REVERSE(R) only after your vehicle isstopped. To rock your vehicle back and forth t o get out of snow, ice or sand without damaging your transmission, see "If You're Stuck: In Sand, Mud, Ice or Snow" in the Index. 0 NEUTRAL (N) - I n this position, your engine doesn't connect with the wheels. To restart when you're already moving, use NEUTRAL (N) only. Also, use NEUTRAL (N) when your vehicle is being towed. 2-2 1