* Under the dash: This is a common location for relays. Check the area near the steering column, often behind panels or under the kick panel. You might need to remove some trim pieces to access it.
* In the underhood fuse box (but less likely): While less common for the fuel pump relay on this vehicle, some years/models may place it here. Carefully inspect the underhood fuse block diagram for a relay labeled "fuel pump" or something similar.
* In the passenger compartment fuse box (under the dash): Again, less common than the underdash locations but worth checking if you haven't found it elsewhere.
To find it, you'll need to do the following:
1. Consult your owner's manual: This is the best place to start. It should have a diagram showing the location of all relays and fuses.
2. Check online resources: Websites like GM-Trucks.com, forums dedicated to GMC Jimmy S15s, or general automotive repair sites may have information specific to your year and model. Searching for "1994 GMC Jimmy S15 fuel pump relay location" will likely yield some helpful results.
3. Use a wiring diagram: A wiring diagram for your specific vehicle will show you the circuit for the fuel pump and trace the relay back to its location. You can usually find these online or at an auto parts store.
Important Note: Before working on any electrical components, disconnect the negative battery cable to prevent accidental shorts or injury.
