1. Preparation:
* Safety First: Work in a well-lit, safe area. Use jack stands to securely lift the car; never work under a car supported only by a jack. Wear safety glasses and gloves.
* Gather Tools: You'll need a socket set (likely 10mm, 13mm, and possibly others), ratchet, wrenches, screwdrivers (Phillips and possibly flathead), possibly a plastic pry tool (to avoid scratching the paint), and a helper is recommended. Consult your owner's manual or a repair manual specific to your year and model for exact bolt sizes and locations.
* New Bumper and Hardware: Ensure you have the correct replacement bumper and all necessary mounting hardware. If the old hardware is damaged or rusted, replace it.
2. Removal of the Old Bumper:
* Disconnect Electrical Connections: This is crucial if your car has rear backup lights, reflectors, or other components mounted on the bumper. Carefully disconnect any wiring harnesses. Take pictures to remember how everything connects for reassembly.
* Remove Bumper Bolts and Fasteners: The bumper will likely be attached with bolts along the top and bottom edges and possibly clips. These are usually located along the wheel wells, under the taillights (sometimes inside the trunk) and potentially along the bottom edge. Carefully remove each bolt and fastener. Work your way systematically around the bumper.
* Release Bumper: Once all fasteners are removed, the bumper should be loose. There might be some resistance; gently rock it back and forth to free it from any remaining clips.
* Remove the Bumper: Once loose, carefully lower the bumper to the ground.
3. Installation of the New Bumper:
* Align the New Bumper: Carefully align the new bumper with the car's body, ensuring it sits evenly and flush.
* Install Fasteners: Reverse the removal process. Start by inserting and tightening the bolts and fasteners, working your way systematically around the bumper.
* Reconnect Electrical Connections: Reconnect any wiring harnesses to the new bumper, referring to the pictures you took earlier.
* Check Alignment and Security: After installing all fasteners, check that the bumper is securely attached and sits flush against the body.
4. Final Checks:
* Test Lights: Ensure all lights (backup, reflectors) are functioning correctly.
* Double-Check Fasteners: Confirm all bolts and fasteners are tight.
* Lower the Car: Carefully lower the car from the jack stands.
Important Considerations:
* Repair Manual: A repair manual specific to your 1991 Chevy Lumina Euro 2-door is highly recommended. It will provide detailed diagrams and instructions.
* Rust: The bolts and fasteners may be rusted or seized. Penetrating oil can help loosen them. If they break, you'll need replacements.
* Clips: Plastic bumper clips are often brittle and break easily. Have spares on hand.
* Damage: Assess the condition of the bumper supports (the metal structure behind the bumper). If they're damaged, they'll need to be repaired or replaced before installing the new bumper.
This process is a general guideline. Consult a repair manual for your specific vehicle to ensure accurate instructions and avoid damaging your car. If you're not comfortable working on your car, it's best to take it to a qualified mechanic.
