1996 GMC Yukon Owner's Manual - Page 79

CAUTION: (Continued) If you have four-wheel drive, your vehicle will be free to roll even if your shift lever is inPARK (P) if your transfer caseis in NEUTRAL (N). So, be sure the transfer case in is a drive gear, two-wheel high (2H) or four-wheel high (4H) or four-wheel low (4L) not in NEUTRAL (N). See "Shifting IntoPARK (P)" in the Index. If you're pullinga trailer, see "Towing a Trailer" in the Index. I -- -- NEUTRAL (N): In this position, your engine doesn't connect with the wheels. To restart when you're only. Also, use already moving, use NEUTRAL (N) NEUTRAL (N) when your vehicle is being towed. -- REVERSE (R):Use this gear to back up. Shifting out of PARK (P) or NEUTRAL (N) while your engineis "racing" (running at high speed) is dangerous. Unless your foot is firmly on the brake pedal, yourvehicle could move very rapidly. You could lose control and hit people or objects. Don't shift out PARK (P)or of NEUTRAL (N)while your engine is racing. NOTICE: Shifting to REVERSE (R) while your vehicle is moving forward could damage your transmission. Shift to REVERSE (R)only after yourvehicle is stopped. To rock your vehicle back and forth to get out of snow, ice or sand without damaging your transmission, see "Stuck: In Sand, Mud, Ice or Snow" in the Index. I NOTICE: Damage to your transmission caused shifting by out of PARK (P) or NEUTRAL (N)with the engine racing isn't covered your warranty. by 2-1