2005 Buick Rainier Owner's Manual - Page 266

Here are some things you must not do if you stall, or are about to stall, when going up a hill. Driving Downhill When off-roading takes you downhill, you will want to consider a number of things: • Never attempt to prevent a stall by shifting into NEUTRAL (N) to rev-up the engine and regain forward momentum. This will not 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. • How steep is the downhill? Will I be able to maintain vehicle control? • What's the surface like? Smooth? Rough? Slippery? Hard-packed dirt? Gravel? • Are there hidden surface obstacles? Ruts? Logs? Boulders? • 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 is steep enough to cause you to roll over if you turn around. If you cannot make it up the hill you must back straight down the hill. • What is at the bottom of the hill? Is there a hidden creek bank or even a river bottom with large rocks? If you decide you can go down a hill safely, then try to keep your vehicle headed straight down, and use a low gear. This way, engine drag can help your brakes and they will not have to do all the work. Descend slowly, keeping your vehicle under control at all times. Q: Suppose, after stalling, I try to back down the hill and decide I just cannot do it. What should I do? A: 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. 4-22