2009 Hummer H3T Owner's Manual - Page 204

4-22 Driving Your Vehicle • Attach a flag to the vehicle to be more visible to approaching traffic on trails or hills. If the vehicle stalls, or is about to stall, and you cannot make it up the hill: • Do not continue if the vehicle shudders or exhibits suspension hopping. This can cause damage to the driveline or suspension components. Improper driving technique is not covered by the vehicle warranty. • Sound the horn as you approach the top of the hill to let opposing traffic know you are there. • Push the brake pedal to stop the vehicle and keep it from rolling backwards and apply the parking brake. • Use headlamps even during the day to make the vehicle more visible to oncoming traffic. { CAUTION Turning or driving across steep hills can be dangerous. You could lose traction, slide sideways, and possibly roll over. You could be seriously injured or killed. When driving up hills, always try to go straight up. • If the engine is still running, shift the transmission to R (Reverse), release the parking brake, and slowly back down the hill in R (Reverse). { CAUTION Driving to the top (crest) of a hill at full speed can cause an accident. There could be a drop-off, embankment, cliff, or even another vehicle. You could be seriously injured or killed. As you near the top of a hill, slow down and stay alert. • If the engine has stopped running, you need to restart it. With the brake pedal pressed, apply the parking brake. If the vehicle has an automatic transmission, shift the transmission to P (Park). Restart the engine. Then, shift to R (Reverse), release the parking brake, and slowly back down the hill as straight as possible in R (Reverse). • Try to drive straight up the hill if at all possible. If the path twists and turns, you might want to find another route. • Ease up on the speed as you approach the top of the hill.