* Under the hood in the fuse box: This is the most frequent location. The fuse box itself might be located near the battery or on the driver's side fender well. The relay may be labeled, or you'll need to consult your owner's manual's fuse and relay diagram.
* Under the dash: Less common for the fuel pump relay specifically, but some vehicles place relays here.
To find it reliably:
1. Consult your owner's manual: This is the single best source. The manual will have a diagram showing the location of all fuses and relays, including the fuel pump relay (it may be labeled as "Fuel Pump" or something similar, or have a specific number).
2. Online resources: Search online for "[Year] Buick LeSabre fuel pump relay location [Engine size]" (e.g., "2000 Buick LeSabre fuel pump relay location 3.8L"). Many forums and websites have pictures and discussions about this. Be sure to verify the information with your specific model.
3. Visual inspection: If your owner's manual is unavailable or unhelpful, carefully inspect the fuse boxes under the hood and (if applicable) under the dash. Look for a relay that might be labeled or that seems appropriately sized for the job.
Caution: Working with electrical components in your car can be dangerous. If you're not comfortable doing this, take it to a qualified mechanic. Incorrectly handling relays or fuses can cause damage to your vehicle's electrical system.
