2004 GMC Envoy Owner's Manual - Page 379

Tire Chains Accessory Inflator Your vehicle may be equipped with an air inflator system. You can inflate things like basketballs and bicycle tires. Also, you can use it to bring your tire pressure up to the proper pressure. It is not designed to inflate large objects which will require more than five minutes to inflate, such as an air mattress. The air inflator is located in the rear compartment on the passenger's side of the vehicle behind an access cover. {CAUTION: Don't use tire chains. There's not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension or other vehicle parts. The area damaged by the tire chains could cause you to lose control of your vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on your vehicle and tire size combination and road conditions. Follow that manufacturer's instructions. To help avoid damage to your vehicle, drive slowly, readjust or remove the device if it's contacting your vehicle, and don't spin your wheels. If you do find traction devices that will fit, install them on the rear tires. To remove the cover, pull the two tabs on the cover and pull it off. The air inflator kit includes a 22 ft (6.7 m) hose with three nozzle adapters. 5-71