1998 GMC Suburban Owner's Manual - Page 211

Driving Uphill Once you decide you can safely drive up the hill, you need to take some special steps. 0 0 Ease up on your speed as you approach the top of the hill. 0 Use a low gear and get a .firm grip on the steering wheel. Get a smooth start up the hill and try t o maintain your speed. Don't use more power than you need, because you don't want your wheels to start spinning or sliding. Attach a flag to the vehicle to make you more visible to approaching traffic on trails or hills. Sound the horn as you approach the top of the hill to let opposing traffic know you're there. Use y o ~ headlamps even during the day. They make ~r you more visible to oncoming traffic. 0 0 0 0 Try t o drive straight LIPthe hill if at all possible. I f the path twists and turns. you might want to find another route. 'r c ,CAUTIO1 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 uphills, always try to go straight up. Driving to the top (crest) a hill a t full speed can of cause an accident. There could be drop-off, a embankment, cliff, o r even another vehicle. You could be seriously injuredo r killed. As you near the top of a hill, slow down and stay alert. 4-19