* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. Look inside the fuse box cover; it should have a diagram showing the relay locations. Look for labels like "Fuel Pump" or "EFI."
* Inside the car, near the fuse box under the dash: Some models might have the fuel pump relay situated in a secondary fuse box inside the passenger compartment.
To find it definitively:
1. Consult your owner's manual: This is the best resource. The manual will have a diagram of your fuse box(es) showing the relay locations.
2. Check online resources: Websites like Buick forums (like BuickForums.com or others) or repair manuals specific to your 1998 Buick LeSabre can provide pictures and exact locations based on your specific vehicle's configuration. Search for "1998 Buick LeSabre fuel pump relay location" along with any additional identifying information about your car (engine size, trim level).
Important Note: Before working with any electrical components, disconnect the negative terminal of your battery to prevent accidental short circuits.