To find the correct fuse:
1. Locate your fuse box: There are typically two fuse boxes in a 1999 Grand Am: one under the hood and one inside the passenger compartment, usually under the dashboard on the driver's side. Your owner's manual will show the exact location and diagrams of both fuse boxes.
2. Consult your owner's manual: This is the most reliable way to find the correct fuse. The manual will have a fuse box diagram showing which fuse controls the interior lights. Look for labels like "Interior Lights," "Dome Lamp," or something similar. The amperage rating will also be listed.
3. Check the fuse: Carefully remove the suspected fuse and inspect it. Look for a broken filament (a thin wire inside the fuse) or a blown fuse (the wire will be melted or broken).
If you find a blown fuse:
* Replace it with a fuse of the same amperage rating. Using a higher amperage fuse is dangerous and can cause a fire.
* Do not immediately replace the fuse if you're not sure why it blew. Find the cause of the short circuit first. Replacing it without addressing the root problem will likely blow the new fuse immediately. The problem could be a shorted wire, a malfunctioning light, or something else in that circuit.
If you can't find the problem after checking the fuse, it's best to consult a qualified mechanic. They have the tools and expertise to diagnose the issue accurately.
