* Under the hood in the fuse box: This is the more common location. Open your hood and locate the main fuse box (often near the battery). The relay itself might be labeled, or you may need to consult your owner's manual's fuse box diagram to identify it. Look for a relay labeled "Fuel Pump," "EFI," or something similar.
* Inside the passenger compartment fuse box: Less common, but possible. Check the fuse box inside the car (usually under the dashboard). Again, your owner's manual will have a diagram showing the location and labeling of the relays.
To find the exact location:
1. Consult your owner's manual: This is the most reliable source. The manual will have diagrams showing the location of all fuses and relays, including the fuel pump relay.
2. Search online: Search for "[Year] Pontiac Sunfire fuel pump relay location" on sites like Google Images. You might find pictures or forum posts that show its location on a similar model. Be cautious and only use this as a secondary method; the location may vary slightly.
3. Check a parts store: Auto parts stores often have diagrams or can look up the location for you based on your vehicle's VIN.
Remember to always disconnect the negative battery terminal before working with electrical components to avoid shorts or injury.