1999 GMC Yukon Owner's Manual - Page 203

yellowblue D As you are backing down the hill, put your left hand Q: A: on the steering wheel at the 12 o'clock position. This way, you'll be able to tell if your wheels are straight and maneuver as you back down. It's best that you back down the hill with your wheels straight rather than in the left or right direction. Turning the wheel too far to the left or right will increase the possibility of a rollover. Suppose, after stalling, I try to back down the hill and decide I just can't do it. What should I do? Set the parking brake, put your transmission in PARK (P) and turn off the engine. Leave the vehicle and go get some help. Exit on the uphill side and stay clear of the path the vehicle would take if it rolled downhill. Do not shift the transfer case to NEUTRAL (N) when you leave the vehicle. Leave it in some gear. Here are some things you must not do if you stall, or are about to stall, when going up a hill. D Never attempt to prevent a stall by shifting into NEUTRAL (N) to "rev-up" the engine and regain forward momentum. This won't work. Your vehicle will roll backwards very quickly and you could go out of control. Instead, apply the regular brake to stop the vehicle. Then apply the parking brake. Shift to REVERSE (R), release the parking brake, and slowly back straight down. CAUTION: Shifting the transfer case to NEUTRAL (N) can cause your vehicle to roll even if the transmission is in PARK (P). This is because the NEUTRAL (N) position on the transfer case overrides the transmission. You or someone else could be injured. If you are going to leave your vehicle, set the parking brake and shift the transmission to PARK (P). But do not shift the transfer case to the NEUTRAL (N) position. Leave the transfer case in the 2 Wheel High, 4 High or 4 Low position. D Never attempt to turn around if you are about to stall when going up a hill. If the hill is steep enough to stall your vehicle, it's steep enough to cause you to roll over if you turn around. If you can't make it up the hill, you must back straight down the hill. 4-21