1998 Pontiac Bonneville Owner's Manual - Page 11
1998 Pontiac Bonneville Manual
Page 11 highlights
I But don't have a seatback reclined if vehicle your is moving. Sitting ina reclined position when your vehicle is in motion can be dangerous. Even buckle if you up, your safety belts can't do their when job you're reclined like this. The shoulder belt can't its job because it do won't be against yourbody. Instead, it will be in front of you. In a crash you could go into it, receiving neckor other injuries. The lap belt can't do its either. In a crash the job belt could go up over your abdomen. The belt forces would be there, notat your pelvic bones. This could cause serious internal injuries. For proper protection when the vehicle is in motion, have the seatback upright. Then sit well back in the seat and wear your safety belt properly. 1-4