GM Service Manual Online
For 1990-2009 cars only

Caution: Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place.

Caution: The underbody-mounted spare tire needs to be stored with the valve stem pointing up. If the spare tire is stored with the valve stem pointing downward, its secondary latch will not work properly and the spare tire could loosen and suddenly fall from your vehicle. If this happened when your vehicle was being driven, the tire might contact a person or another vehicle, causing injury and, of course, damage to itself as well. Be sure the underbody-mounted spare tire is stored with its valve stem pointing up.

Notice: An aluminum wheel with a flat tire should always be stored under the vehicle with the hoist. However, storing it that way for an extended period could damage the wheel. To avoid this, always stow the wheel properly with the valve stem pointing up and have the wheel repaired as soon as possible.

Follow this diagram to store the underbody-mounted flat or spare tire.


    Object Number: 810216  Size: A3
  1. Wheel Wrench

  2. Hoist Shaft

  3. Extension

  4. Retainer

  5. Spare or Flat Tire (Valve Stem Pointed Up)

  1. Put the tire on the ground at the rear of the vehicle, with the valve stem pointed up and to the rear.
  2. Pull the retainer (D) through the wheel.
  3. Put the socket end of the extension (C), on a 45 degree angle downward, through the hole in the rear bumper and into the hoist shaft (B).
  4. Raise the tire fully against the underside of the vehicle by turning the wheel wrench (A) clockwise until you hear two clicks or feel it skip twice. The spare tire hoist cannot be overtightened.

  5. Object Number: 811589  Size: B4
  6. Make sure the tire is stored securely. Push, pull (A), and then try to turn (B) the tire. If the tire moves, use the wheel wrench and socket end of the extension to tighten the cable.

To return the equipment to the proper location under the rear seat of the vehicle, do the following:


    Object Number: 1285730  Size: B3
  1. Wing Nut

  2. Jack Bracket

  3. Jack and Wheel Blocks

  4. Retainer

  5. Thumbwheel

  6. Tool Kit Wing Nut

  7. Tool Kit

  1. Assemble the wheel blocks (C) and retainer (D) to the jack.
  2. Place the jack in the bracket (B).
  3. Install the wing nut (A) to the retainer (D).
  4. Rotate the thumbwheel (E) clockwise to tighten the jack in the bracket.
  5. Tighten wing nut (A).
  6. Install the tool kit (G) to the jack bracket (B).
  7. Rotate the tool kit wing nut (F) clockwise to tighten.
  8. Install the jack cover.