2003 GMC Envoy Owner's Manual - Page 258

Q: What if I'm driving across an incline that's not too steep, but I hit some loose gravel and start to slide downhill. What should I do? Driving across an incline that's too steepwill make your vehicle roll over. You could be seriously injured or killed. If you have any doubt about the steepnessof the incline, don't drive across it. Find another route instead. A: If you feel your vehicle starting to slide sideways, turn downhill. This should help straighten out the vehicle and prevent the side slipping. However, a much better way to prevent this is to get out and "walk the course" so you know what the surface is like before you drive it. 4-25