2003 GMC Sierra 1500 Pickup Owner's Manual - Page 82

The passenger sensing system is designed to turn off the' Iright front passenger's frontal air bag if: e e the right front passenger seat is unoccupied the system determines that an infant is present in a rear-facing infant seat the system determines that a small child is present in a forward-facing child restraint the system determines that a small child is present in a booster seat, e a right front passenger takes hidher weight off of the seat for a period of time the right front passenger seat is occupied by a smaller person, such as a child who has outgrown child restraints or a very small person the air bag off switch is in the off position or if there is a critical problem with the air bag system or the passenger sensing system The passenger sensing system is designed to turn off the passenger's frontal air bag when a rear facing infant seat, a forward-facing child restraint or a booster seat is detected. If the child restraint has been installed and the on indicator is lit, turn the vehicle off, remove the child restraint from the vehicle and reinstall the restraint following the child restraint manufacturer's directions and refer to Securing a Child Restraint in the Right Front Seat Position on page 1-54 of this manual. If after reinstalling the child restraint and restarting the vehicle, the on indicator is still lit, secure the child in the child restraint in a rear seat position in the vehicle and check with your dealer. The passenger sensing system is designed to enable (may inflate) the right front passenger's frontal air bag anytime the system senses that a person of adult size is sitting properly in the right front passenger's seat. When the passenger sensing system has allowed the air bag to be enabled, the on indicator will light and stay lit to remind you that the air bag is active. e When the passenger's frontal air bag has been turned off either by the passenger sensing system or by the air bag off switch, the off indicator will light and stay lit to remind you that the air bag is off. If a person of adult-size is sitting in the right front passenger's seat, but the off indicator is lit, it could be because that person isn'tsitting properly in theseat or the air bag off switch is in the off position. 1-75