1995 GMC Yukon Owner's Manual - Page 204

Here are some other things to consider as you approach a hill. Is there a constant incline, or does the hill get sharply steeper in places? 0 Is there good traction on the hillside, or will the surface cause tire slipping'? Is there a straight path up or down the hill so you won't have to make turning maneuvers? Are there obstructions on the hill that can block your path (boulders, trees, logs or ruts)'? What's beyond the hill'? Is there a cliff, an embankment, a drop-off, a fence? Get out and walk the hill if you don't know. It's the smart way to find out. 0 Is the hill simply too rough? Steep hills often have ruts, gullies, troughs and exposed rocks because they are more susceptible to the effects of erosion. Driving Uphill Once you decide you can safely drive up the hill, you need to take some special steps. 0 0 Use a low gear and get a firm grip on the steering wheel. Get a smooth start up the hill and try to maintain your speed. Don't use more power than you need, because you don't want your wheels to start spinning orsliding. Try to drive straight up the hill if at all possible. If the path twists and turns, you might want to find another route. 0 0 0 Ease up on your speed as you approach the top of the hill. 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. 0 Use your headlights even during the day. They make you more visible to oncoming traffic. 4-16