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How to Install an ABS Relay in Vehicles

by Contributing Writer; Updated June 12, 2017

If you're looking Vehicles the ABS relay in your Vehicles you might find two or you might not find any. To remove the relay, get a firm grasp on it and pull straight up on it. To install a new relay, Align the blades on the relay with the terminals in the fuse box and gently press it into place.

Under The Hood:

 How to Install an ABS Relay in a Chevy Silverado

Disconnect the negative battery cable before disconnecting the command module's electrical harness connectors.

Disconnect and label the five brake lines, and take off the bolts which secure the command module to the frame rail.

Remove the command module assembly from the Silverado and disconnect it from the mounting bracket and the two-way ABS pump motor connector.

Remove the ABS command module from the Brake Pressure Modulator Valve. This may require some force to separate the two.

Replace the unit and reassemble and reattach the command module in the reverse order in which it was removed. Be sure to clean the area where the command module joins the Brake Pressure Modulator Valve.

Tighten the retaining bolts and bracket bolts to manufacturer's specifications and reconnect the brake pipes and tightening them to specifications.

Reconnect the negative cable on the battery and bleed the brake system.

Items you will need

  • Replacement unit

  • Screwdriver

  • Shop towel

  • Wrench

  • Pliers

  • Flashlight

  • New mounting bolts

 How to Install an ABS Relay in a Jeep Grand Cherokee

1993-to-1994 Models

If you own a 1993 or 1994 model, the relay for the ABS pump is in the top row of relays, third from the left in the under-hood fuse box. The ABS system relay is in the same row and is the far right relay.

1995 and 1996 Models

If you own a 1995 or 1996 model, the relay for the ABS pump is the top, right relay in the under-hood fuse box. The ABS system relay is in the third row from the top, second from the left.

 How to Install an ABS Relay in a Chevy Impala

Disconnect the negative battery cable.

Find the Electronic Brake Control Module beneath the instrument panel. This panel should be located on the left side of the steering column.

Press down and out on the pressure tabs to release the Electronic Brake Control Module from its bracket. Do not use a great deal of force to remove the module. If it appears to be stuck, press the pressure tabs one at a time and support the module with your other hand.

Slip off the electrical harness and take the module out of the Chevy Impala.

Slide the new relay back onto the electrical harness and reattach the harness. Fasten the pressure tabs.

Return the assembly to its original position and reconnect the negative cable on the battery.

Items you will need

  • Wrench

  • New relay

About the Author

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us.

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