2002 GMC Envoy Owner's Manual - Page 303

Removing the Spare Tire and Tools The tools you'll be using include the wheel wrench (A), tire blocks (B), extension (socket end) (C), handle (jack end) (D), and jack (E). The following instructions explain how to remove the spare tire mounted underneath your vehicle. The jacking equipment you will need is stored under the rear seat of the vehicle. See "Rear Seats" in the Index for more information on accessing the jacking equipment under the rear seat. NOTICE: Never remove or restow a tire from/to a stowage position under the vehicle while the vehicle is supported by a jack. Always tighten the tire fully against the underside of the vehicle when restowing. 5-19