GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2008 🢒 H3 🢒 Service and Appearance Care 🢒 Tires 🢒 Changing a Flat Tire

If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on your hazard warning flashers.

Caution: Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall on you or other people. You and they could be badly injured or even killed. Find a level place to change your tire. To help prevent the vehicle from moving:

  1. Set the parking brake firmly.
  2. Put the shift lever in P (Park).
  3. If you have a four-wheel-drive vehicle, be sure the transfer case is in a drive gear - not in N (Neutral).
  4. Turn off the engine and do not restart while the vehicle is raised.
  5. Do not allow passengers to remain in the vehicle.
To be even more certain the vehicle will not move, put blocks at the front and rear of the tire farthest away from the one being changed. That would be the tire on the other side, at the opposite end of the vehicle.

When you have a flat tire, you will first need to set up the wheel blocks before changing it. They are located in the tool bag, in the swing-gate. See Removing the Spare Tire and Tools for more information.


Object Number: 1561332 Size: A2

To use the wheel blocks, lift the wheel block and lock into place.

Then, use the following as a guide to assist you in the placement of the wheel blocks.


Object Number: 809231 Size: B3

The following information will tell you next how to use the jack and change a tire.