1. Preparation and Safety:
* Disconnect the battery: This is crucial to prevent electrical shorts and injury. Disconnect the negative (-) terminal first.
* Gather tools: You'll likely need a small flathead screwdriver, possibly a Phillips head screwdriver, a socket set (likely 1/4" drive), and possibly needle-nose pliers. A repair manual will provide specific socket sizes.
* Repair Manual: A shop manual for your 1971 Pontiac Le Mans is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle. This is the best way to avoid damaging anything.
2. Accessing the Ignition Switch:
* Steering Column Removal (Likely Necessary): In most cases, you'll need to at least partially remove the steering column or steering wheel to fully access the ignition switch. This is the most challenging part and involves removing the steering wheel, which requires a special steering wheel puller (available at auto parts stores). This step is complex and should only be attempted if you're comfortable with automotive disassembly. Improper removal can damage the steering column or injure you.
* Column Covers: Remove any trim or plastic covers surrounding the steering column to expose the ignition switch and related components.
3. Removing the Ignition Switch:
* Wiring Harness: Carefully disconnect the wiring harness from the ignition switch. Take pictures or make notes to remember the correct wiring connections.
* Retaining Clip or Screws: The ignition switch is typically held in place by either a retaining clip or screws. Your repair manual will show you how to release this mechanism.
* Removing the Switch: Once the wiring harness is disconnected and the retaining mechanism is released, the ignition switch should slide out or be removed.
4. Reassembly:
* Installation is the reverse of removal. Carefully reassemble everything, ensuring all wiring connections are secure.
* Reconnect the battery.
* Test the ignition system.
Important Considerations:
* Year and Trim Variations: The exact procedure might vary slightly depending on your specific Le Mans model. Some years/models might have different switch designs or mounting methods.
* Professional Assistance: If you're not comfortable working on your car's electrical system or steering column, it's best to seek professional help from a qualified mechanic. Incorrectly removing or reinstalling the ignition switch could damage your vehicle's electrical system or steering mechanism.
* Security: Replacing the ignition switch might require re-keying or having a new key made.
In short: Attempting this without a 1971 Pontiac Le Mans specific repair manual is strongly discouraged. The risk of damage far outweighs the potential time savings from skipping this crucial resource. Safety is paramount.
