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Mobile ABS Module Repair & Diagnosis

How to know if your GM Kelsey-Hayes 325 ABS module is bad & Repair Guide

We've been seeing a lot of these vehicles having Kelsey-Hayes 325 ABS Module problems recently. It's one of those problems that just plagues a generation of vehicles.

Affected Vehicles

  • 1999–2006 Chevrolet Silverado 1500/2500/3500
  • 1999–2006 Chevrolet Tahoe
  • 1999–2006 Chevrolet Suburban
  • 1999–2006 Chevrolet Avalanche
  • 1999–2006 Chevrolet Astro
  • 1999–2006 GMC Sierra
  • 1999–2006 GMC Yukon
  • 1999–2006 GMC Safari
  • 1999–2006 Cadillac Escalade

Associated Fault Codes

C0265C0267C0268
Difficulty
Diagnosis
(15 mins)
Repair
(1.5 hours)

1Is this my Problem?

Here are the most common scenarios we hear from our customers experiencing the Kelsey-Hayes 325 ABS Module failure and what you will notice.

Kelsey-Hayes 325 ABS Module

Observable Symptoms:

  • ABS and Brake dashboard warning lights stay on continuously
  • ABS pump motor hums/runs underneath the truck even with the key removed
  • Truck battery drains overnight, leaving you stranded

A framework for being sure

  1. Pull the 60A ABS maxi-fuse under the hood to see if the pump humming stops.
  2. Connect an OBD-II scanner and check for communication code C0265.

Now you know for sure you have this problem.

2Solutions

Mail-In Repair

24hr Turnaround
$245

Pull the module out yourself and let the professionals repair it.

Text to Start

Full Service

Same-Day
$395

Relax, our local trusted technicians will get you back on the road today.

Dispatch

DIYer

3-4 Hours
$0

Keep reading below for the step-by-step how to.

Guide

3Pull the Part

Tools you may need:

Parts you may need:

  • None required for removal
  1. Locate the ABS module under the driver-side frame rail.
  2. Clean dirt around the module to prevent contamination.
  3. Remove the 4 Torx T20 screws holding the module to the pump.
  4. Carefully pull the module straight back off the hydraulic block.

4Fix It

Tools you may need:

Parts you may need:

  1. Cut open the plastic casing using a Dremel along the factory seam.
  2. Locate the 6 heavy relay pins on the circuit board.
  3. Desolder the old, fractured lead-free solder.
  4. Reflow the joints with fresh leaded solder.
  5. Seal the casing back together with RTV silicone.

Skip the headache. We'll fix it today.

Choose your city below to book our mobile technician directly to your driveway.

📍 Front Range Service📍 New York City Service📍 St. Louis Service

Nationwide Mail-In Repair

Not in Missouri or Colorado? Remove the module and mail it to us. 24-hour turnaround with a lifetime warranty.

Text to Start Mail-In

Who We Are

We are two friends with backgrounds in electronics and auto repair who saw a glaring problem in the market. Dealerships were price-gouging customers by replacing entire assemblies or performing quick software fixes for thousands of dollars when the components could be permanently repaired reliably with the right expertise.

We built Driveway Module Repair to fix the root cause of the problem directly in your driveway, saving you time, money, and a lot of unnecessary stress. We proudly serve the greater St. Louis and Front Range, CO areas.

Will Thessen
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