Chevy Fuel Pump Relay Diagram

The fuel pump relay is an important part of a car’s fuel system. It is responsible for supplying power to the fuel pump and can be found in the engine bay, usually near the battery. The relay itself is usually a small box with a few terminals and a fuse.

The diagram below shows a typical Chevy fuel pump relay.

If you’re having trouble with your Chevy fuel pump, you may be able to solve the problem by checking the fuel pump relay. This diagram shows where the relay is located and what it looks like. With this information, you should be able to test the relay and see if it’s working properly.

If not, you may need to replace it.

How Do You Jump a Fuel Pump Relay on a Chevy Truck?

If your Chevy truck’s fuel pump relay has gone bad, there are a few ways you can go about jumpstarting it. One way is to use a jumper wire to bypass the relay and send power directly to the fuel pump. Another way is to remove the fuel pump relay and jump the two terminals on the relay socket with a paperclip.

How Do You Bypass a Fuel Pump Relay?

If your car has a fuel pump relay, it is usually located in the fuse box. To bypass the relay, you will need to locate the fuse that powers the relay. Once you have found the fuse, remove it and use a jumper wire to connect the two terminals on the fuse.

This will bypass the relay and allow power to flow directly to the fuel pump.

What Pins to Jump on Relay?

When it comes to relay pins, there are a few things you need to keep in mind. First, all relays have four pins: two for the coil (the electromagnet that activates the switch), one for the normally closed contact, and one for the normally open contact. You can identify these by their labels: C, NC, NO, and COM.

Second, when choosing which pins to jump on a relay, you’ll need to consider both the voltage and current requirements of your circuit. For example, let’s say you’re using a 12V relay in your circuit. If you’re only switching low-current devices (like LEDs), you can get away with jumper wires that are just 16 gauge or so.

However, if you’re switching higher-current devices (like motors), you’ll need heavier-gauge wires to handle the increased load. The same goes for voltages – if you’re using a high-voltage relay (24V or more), make sure your jumper wires are rated for that voltage as well. As for which specific pins to jump on the relay, it depends on what type of circuit you’re building.

If you want the device attached to the NC pin to be powered all the time (even when the relay is off), then you would connect that device’s power supply directly to COM. On the other hand, if you want the device attached to NO to be powered all the time, then you would connect its power supply directly to C. In either case, when energizing coil by applying power across C and COM , this will cause contacts inside relay move so that NC becomes connected with COM while NO gets disconnected from COM . This will reverse when coil is deenergized i.e., removed from C and COM .

Another common configuration is known as an interlocking circuit – this is where two relays are used together such that energizing one relay’s coil also energizes the second relay’s coil (and vice versa). In this case, each relay needs its own power source; however, they can share a common ground connection between their respectiveNC/COM terminals. To create an interlocking circuit using our 12V example above, we would first jumper wire C1-C2 and NC1-NO2 , then apply power across C1-COM1 .

How Do You Test a Fuel Pump Relay?

A fuel pump relay is an electrical device that is used to control the flow of electricity to the fuel pump. There are a few different ways to test a fuel pump relay, but the most common way is with a multimeter. To test a fuel pump relay with a multimeter, first set the meter to the “ohms” setting.

Then, disconnect the negative battery terminal and remove the relay from its socket. Place one lead of the meter on each of the two terminals on the bottom of the relay. If there is continuity, then the relay is good.

If there is no continuity, then the relay needs to be replaced.

94 K1500 Fuel Pump Relay

The fuel pump relay is an important component of your Chevrolet K1500. It’s located in the engine bay, and it controls the electric fuel pump. If the relay fails, the fuel pump will not operate, and your engine will not run.

Here are some symptoms of a failing fuel pump relay: -Your engine will crank but won’t start. -You may hear the fuel pump running for a few seconds after you turn the key to the “On” position, but then it will stop.

-Your Check Engine Light may be on. If you suspect that your fuel pump relay is failing, have it checked by a qualified mechanic as soon as possible.


If you’re troubleshooting your Chevy fuel pump relay, here’s a helpful diagram. The relay is located in the fuse block, and controls power to the fuel pump. If the engine is not running, or if the relay is faulty, the fuel pump will not operate.

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Robert is a lifelong enthusiast of all things automotive. He has been working with wiring diagrams and schematics since he was in high school, and continues to use them as the foundation for his knowledge today.

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