* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. Look for a relay diagram on the inside of the fuse box lid; it should identify the fuel pump relay.
* Under the dash: Less common, but some models might have it in a smaller fuse/relay box under the dashboard.
* In the trunk: While less likely, it's a possibility.
To find it definitively:
1. Consult your owner's manual: This is the best resource. It will have a diagram showing the location of all relays and fuses.
2. Check the fuse box diagram: The diagram inside the underhood fuse box lid should clearly identify each relay.
3. Use a multimeter: If you're comfortable working with electrical systems, you can use a multimeter to test relays. Identify potential fuel pump relays based on their size and connector configuration (comparing them to the diagram if available) and check for continuity. Be cautious when working with electrical systems and disconnect the negative battery terminal before starting any testing.
4. Search online forums: Search online Buick forums (like the Buick Forums website) for "1987 LeSabre fuel pump relay location." Someone with the same car might have already posted the exact location.
Remember to always disconnect the negative battery cable before working with any electrical components in your vehicle. If you're not comfortable working on your car's electrical system, it's best to take it to a qualified mechanic.
