1998 Oldsmobile Bravada Owner's Manual - Page 17

But don't have a seatback reclined if your vehicle is moving. Sitting in a reclined position when your vehicle is in motion can be dangerous. Even if you buckle up, your safety belts can't do their job when you're reclined like this. The shoulderbelt can't do its job because it won't be against your body. Instead, itwill be in front of you. In a crashyou could go into it, receiving neck or other injuries. The lapbelt can't do itsjob either. In a crash the belt could go up over your abdomen. The belt forces would be there, not at your pelvic bones. This could cause serious internal injuries. For properprotection when the vehicle is in 1 motion, have the seatback upright. Thensit well back in the seat and wear your safety belt properly.