How to Jump Fuel Pump Relay on Chevy Truck

You may have experienced a bad fuel pump relay if you own a Chevy truck. Jumping the fuel pump relay is a straightforward process that can save you time and money. Here are the steps to follow:

Supplies Needed:

  • Pliers
  • Screwdriver
  • Electrical connector kit
  • Length of wire (about two feet)
  1. Locate the fuel pump relay near the battery, usually with a large black wire attached.
  2. Use a screwdriver to remove the black wire from the fuel pump relay.
  3. Twist the two ends of the wire together using pliers.
  4. Connect the positive (red) wire from the electrical connector kit to the end of the wire attached to the relay.
  5. Connect the negative (black) wire from the electrical connector kit to the other end of the wire.
  6. Turn on your Chevy truck to test if the fuel pump kicks on.


What Pins to Jump on Relay?

The fuel pump relay is responsible for supplying power to the fuel pump, and jumping it is crucial in cases of failure. If you need to jump the fuel pump relay, connect pin 30 to pin 87 using a jumper wire. The relay is usually labeled on the fuse box diagram in the engine bay.

How Do You Hotwire a Fuel Pump?

Hotwiring a fuel pump is not a permanent solution, but it can start your car in case of a fuel pump relay failure. To hotwire the fuel pump, disconnect the wire from the ignition switch to the fuel pump relay and use a jumper wire to connect the battery directly to the pump. This bypasses the fuel pump relay and allows the fuel pump to operate without power from the ignition switch.

How Do You Jump a Relay With a Paperclip?

A paperclip can jump a fuel pump relay if no jumper wire is available. To do this, remove the black wire from the relay and twist one end of the paperclip around the terminal. Then, touch the other end of the paperclip to the positive (red) terminal on the battery. However, there are more reliable solutions.

How Do You Run a Fuel Pump Directly to a Battery?

To run a fuel pump directly to a battery, disconnect the wire from the pump and connect it to the battery’s positive terminal. Then, run a jumper wire from the battery’s negative terminal to a ground point on the vehicle. This allows power to flow directly to the fuel pump but is only a temporary solution.

What Sends Power to the Fuel Pump Relay?

The ignition switch is responsible for sending power to the fuel pump relay. As long as the ignition switch is turned on, the fuel pump relay will continue sending power to the pump.


Jumping a fuel pump relay is a temporary solution, and replacing the relay should be done as soon as possible. Always use a jumper wire to connect pin 30 to pin 87 to avoid hotwiring the fuel pump or using a paper clip to jump the relay. If you have any questions, it is best to consult a professional mechanic.

About the author, Laurence Perkins

Laurence Perkins is the passionate car enthusiast behind the blog My Auto Machine. With over a decade of experience in the automotive industry, Perkins has knowledge and experience with a wide range of car makes and models. His particular interests lie in performance and modification, and his blog covers these topics in-depth. In addition to his own blog, Perkins is a respected voice in the automotive community and writes for various automotive publications. His insights and opinions on cars are highly sought-after.