2008 GMC Envoy Owner's Manual - Page 379

A. B. C. D. E. Wheel Wrench Hoist Shaft Extension Retainer Spare or Flat Tire (Valve Stem Pointed Up) 3. Insert the socket end of the extension (C) on a 45 degree angle downward into the hoist drive shaft hole. 1. Open the liftgate. See Liftgate/Liftglass on page 2-12 for more information. 2. Attach the wheel wrench (A) to the extension (C). It is exposed when the rear gate is open and is just above the rear bumper. Be sure the socket end of the extension (C) connects to the hoist shaft. 5-85