To find the relevant fuses:
1. Consult your owner's manual: This is the *most reliable* source. It will have a detailed fuse diagram showing what each fuse protects and its location.
2. Check the underhood fuse box: This is usually located under the hood, often near the battery. Look for a fuse box cover with a diagram printed on it.
3. Check the interior fuse box: Many Grand Ams also have an interior fuse box, often located under the dashboard on the driver's side. Again, look for a diagram on the cover.
Fuses to check (likely candidates, but check your manual!):
* A/C compressor relay: This is more likely a relay than a fuse, but it controls the compressor. If the compressor isn't engaging, this is a prime suspect. The relay is usually found in either fuse box.
* Blower motor fuse: This fuse protects the fan that blows air through the vents. If the fan doesn't work, this is the fuse to check.
* Other related fuses: There might be fuses for the AC clutch or other AC-related components. The owner's manual will be your guide here.
Important Notes:
* Always turn off the ignition before checking fuses.
* Use a test light or multimeter to verify a blown fuse before replacing it. Don't just rely on visual inspection.
* Replace a blown fuse with one of the *same amperage rating*. Using the wrong amperage can damage electrical components.
Without your owner's manual, pinpointing the exact fuse is impossible. Find the manual (often available online as a PDF from Pontiac/GM) – it's the only way to be certain.
