2004 GMC Envoy Owner's Manual - Page 267

{CAUTION: Heavy braking when going down a hill can cause your brakes to overheat and fade. This could cause loss of control and a serious accident. Apply the brakes lightly when descending a hill and use a low gear to keep vehicle speed under control. Q: Am I likely to stall when going downhill? A: It is much more likely to happen going uphill. But if it happens going downhill, here is what to do. • Stop your vehicle by applying the regular brakes. Apply the parking brake. • Shift to PARK (P) and, while still braking, restart the engine. • Shift back to a low gear, release the parking brake, and drive straight down. • If the engine will not start, get out and get help. Q: Are there some things I should not do 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, avoid turns that take you across the incline of the hill. A hill that is not too steep to drive down may be too steep to drive across. You could roll over if you do not drive straight down. • Never go downhill with the transmission in NEUTRAL (N). This is called "free-wheeling." Your brakes will have to do all the work and could overheat and fade. 4-25