However, if you're determined to do it yourself, here's a general outline. This is not a step-by-step guide, and specific procedures might vary slightly depending on the exact model and trim level. Always consult a repair manual specific to your vehicle year and model for detailed instructions and diagrams.
General Steps (Proceed with caution):
1. Disconnect the Battery: This is crucial to prevent electrical shocks and accidental short circuits. Disconnect both negative and positive terminals.
2. Steering Wheel Removal (Possibly): Depending on the design, you might need to remove the steering wheel to gain access to the ignition lock cylinder. This requires special tools and knowledge to avoid damaging the airbag. If unsure, skip this step and seek professional help.
3. Column Shroud Removal: You'll need to remove the plastic shroud or cover around the steering column to expose the ignition lock cylinder. This often involves removing screws and potentially some trim pieces.
4. Ignition Switch Harness Disconnection: Locate the wiring harness connected to the ignition switch. Carefully disconnect the electrical connectors. Take pictures or make notes to remember how they were connected.
5. Ignition Lock Cylinder Removal: This is the most challenging part. There's usually a retaining clip or ring holding the cylinder in place. You'll need the proper tools (possibly a special tool designed for this specific vehicle) to remove this retainer and carefully extract the cylinder. This often involves some maneuvering and can be tricky. The repair manual is essential here.
6. Installation (Reverse Order): After replacing the cylinder (if that's your goal), reinstall all components in the reverse order of removal, ensuring all electrical connectors are securely connected.
Tools You'll Likely Need:
* Screwdrivers (Phillips and possibly flathead)
* Socket set
* Possibly a special ignition lock cylinder removal tool
* A repair manual specific to your 1999 Pontiac Grand Am
Again, I strongly advise against attempting this if you lack experience in automotive repair. Improperly removing or reinstalling the ignition lock cylinder can lead to damage to your car's steering system, ignition system, or even airbag deployment. The cost of professional repair will likely be far less than the cost of fixing a mistake made during this process. A repair manual specific to your vehicle is invaluable for this type of repair.
