1994 GMC Suburban Owner's Manual - Page 179

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 won't have to do all the work. Descend slowly, keeping your vehicle under control at all times. Q: Are there some thingsI should notdo when driving down a hill? A: Yes! These are important because if you ignore them you could lose control and have a serious accident. When driving downhill, avoidturns that take you across the incline of the hill. A hill that's not too steep to drive down may be too steepto drive across.You could roll over if you don't drive straight down. Never go downhill with the transmission in "N" (Neutral) , or with the clutch pedal depressed in a manual shift . This is called "free-wheeling." Your brakes will have to do all the work and could overheat and fade. Q: Am I likely to stall when going downhill? A: It's much more likely to happen going uphill. But if it happens going downhill, here's what to do. Stop your vehicle by applying the regular brakes. Apply the parking brake. Shift to " P ' (Park) (or toNeutral with the manual transmission) and, while still braking, restart the engine. Shift back to a low gear, release the parking brake, and drive straight down. 0 If the engine won't start, get out and get help. 4- 19