Tools You'll Need:
* Socket set: Various sizes, likely including 13mm, 15mm, and possibly others depending on your specific Blazer.
* Wrench set: Open-ended and/or combination wrenches to complement your socket set.
* Screwdrivers: Phillips and flathead, various sizes.
* Hammer: A rubber mallet is preferable to avoid damaging parts.
* Penetrating oil (like PB Blaster): Essential for loosening rusted bolts.
* Jack and jack stands: Crucial for safety. Never work under a vehicle supported only by a jack.
* Safety glasses and gloves: Protect yourself from injury.
* New upper door hinge: Ensure you get the correct part for your specific Blazer model (2-door or 4-door).
* Torque wrench: Highly recommended for properly tightening bolts.
Steps:
1. Safety First: Park your Blazer on a level surface, engage the parking brake, and chock the wheels. Use a jack and jack stands to safely lift the vehicle and support the door side. Never work under a vehicle supported only by a jack.
2. Prepare the Door: Open the door fully. You might need to remove the interior door panel to access some bolts, depending on the hinge's design. Consult a repair manual if needed for panel removal.
3. Loosen the Hinge Bolts: Liberally apply penetrating oil to all hinge bolts before attempting to remove them. Allow the oil to penetrate for at least 15-30 minutes. Using the appropriate sockets and wrenches, carefully loosen the bolts holding the upper hinge to the door and the body. Some bolts may be difficult to access. You may need extensions or swivel sockets.
4. Remove the Hinge: Once the bolts are loosened, carefully remove them. The hinge should now be loose enough to separate from the door and body. You may need to gently pry or tap with a rubber mallet to separate the hinge from the door and body.
5. Installation of the New Hinge: Align the new hinge with the mounting points on the door and the body. Insert the bolts and tighten them finger-tight.
6. Tighten the Bolts: Using a torque wrench, tighten the bolts to the manufacturer's specified torque. This is crucial to prevent damage and ensure proper function. Consult your repair manual for the correct torque specifications.
7. Check Door Alignment and Function: Lower the vehicle. Close and open the door several times to ensure smooth operation and proper alignment. If there's any binding or misalignment, you may need to slightly adjust the hinge bolts.
8. Reinstall Interior Door Panel (if removed): Carefully reinstall the interior door panel, if removed, ensuring all clips and fasteners are secure.
Important Considerations:
* Rust: On older vehicles, rusted bolts can be extremely difficult to remove. You may need to use a bolt extractor if a bolt breaks.
* Repair Manual: A repair manual specific to your 1996 Chevy Blazer is invaluable. It will provide detailed diagrams, torque specifications, and other essential information.
* Professional Help: If you're uncomfortable with any aspect of this repair, it's best to take your Blazer to a qualified mechanic.
This is a general guide. Variations may exist depending on your specific Blazer model and the condition of the hinge and its associated hardware. Always prioritize safety and consult a repair manual for accurate instructions and specifications.
