1996 GMC Sonoma Owner's Manual - Page 147

0 Sound the horn as you approach the top of the hill to let opposing traffic know you're there. Use your headlamps even during the day. They make you more visible to oncoming traffic. "urning 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. 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. Driving to the top (crest) a hill at full speed can of 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. 4-19