1. Safety First:
* Park on a level surface: Engage the parking brake firmly.
* Chock the wheels: Place wheel chocks behind the front wheels (opposite the wheel you're removing) to prevent the vehicle from rolling.
* Gather your tools: You'll need a lug wrench (the one that came with your Blazer is ideal, but a comparable one will work). A jack and jack stands are crucial for safety. Gloves are also recommended.
2. Prepare the Vehicle:
* Locate the spare tire, jack, and lug wrench: These are usually located under the cargo area floor.
3. Loosen the Lug Nuts:
* Before jacking up the vehicle, use the lug wrench to slightly loosen the lug nuts on the rear wheel you're removing. Don't remove them completely yet, just break them free. Turn them counter-clockwise.
4. Jack Up the Vehicle:
* Consult your owner's manual: Find the correct jacking points for your Blazer. These are usually reinforced areas of the frame near the wheel. Incorrect jacking points can damage the vehicle.
* Raise the vehicle: Slowly and steadily raise the vehicle until the tire is a few inches off the ground.
* Place Jack Stands (Crucial for Safety): Never work under a vehicle supported only by a jack. Securely place jack stands under the vehicle's frame near the jacking point *before* you proceed further.
5. Remove the Tire:
* Unscrew the lug nuts completely: Now, completely unscrew the lug nuts and keep them together in a safe place (e.g., inside the hubcap).
* Pull the tire off: Carefully pull the tire straight off the wheel studs. It may require a bit of force.
6. Reverse the Process to Reinstall:
* Mount the new tire (or reinstall the old one): Align the tire onto the wheel studs.
* Tighten the lug nuts by hand: Tighten the lug nuts by hand, ensuring the tire is seated properly.
* Lower the vehicle slowly: Carefully lower the vehicle using the jack.
* Tighten the lug nuts with the wrench: Once the vehicle is on the ground, use the lug wrench to tighten the lug nuts in a star pattern (opposite nuts first) to ensure even pressure. Don't overtighten.
* Final Check: Give the lug nuts one last tightening check.
Important Notes:
* Owner's Manual: Always consult your owner's manual for specific instructions and jacking points for your 2004 Chevy Blazer. This guide provides general steps.
* If Unsure: If you're not comfortable performing this task, take your vehicle to a qualified mechanic or tire shop. Improper procedures can lead to injury or vehicle damage.
* Lug Nut Torque: While you don't need a torque wrench for a simple tire change, be mindful of not overtightening the lug nuts. Overtightening can strip the threads or damage the studs.
This process is generally the same for most vehicles, but always remember safety first! If you're not certain about any step, seek professional help.
