2000 GMC Envoy Owner's Manual - Page 184

On a large hill, the incline may get steeper as you near the top, but you may not see this because the crest of the hill is hidden by bushes, grass or shrubs. Here are some other things to consider as you approach a hill. Driving Uphill Once you decide you can safely drive up the hill, you need to take some special steps. D Use a low gear and get a firm grip on the steering wheel. D Is there a constant incline, or does the hill get sharply steeper in places? D Get a smooth start up the hill and try to maintain D Is there good traction on the hillside, or will the surface cause tire slipping? your speed. Don't use more power than you need, because you don't want your wheels to start spinning or sliding. If the path twists and turns, you might want to find another route. D Is there a straight path up or down the hill so you won't have to make turning maneuvers? path (boulders, trees, logs or ruts)? D Try to drive straight up the hill if at all possible. D Are there obstructions on the hill that can block your D 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. 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. D 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. 4-20