How To Fix C0267 Pump Motor Circuit Open Chevy Silverado

The C0267 pump motor circuit open issue in your Chevy Silverado is a serious red flag. It means your truck’s ABS (Anti-lock Braking System) pump motor circuit has an electrical fault—most likely an open or broken connection. And that’s not something to ignore, because your ABS is a major part of your truck’s braking safety system.

So if your brake warning light suddenly comes on, and you scan your truck to find a C0267 error code, don’t panic—this guide will walk you through everything you need to know in plain English, from what this code means to how to fix it step by step.

What Does the C0267 Code Actually Mean?

When your Silverado displays a C0267 diagnostic trouble code (DTC), it’s letting you know that there’s an “open circuit” in the ABS pump motor. That means the system isn’t receiving the electrical signal it needs to operate the ABS pump—aka the part that controls brake pressure during hard stops or on slippery roads.

Think of the ABS pump motor like the heart of your emergency braking system—without it, your truck can’t pulse the brakes properly in critical moments, which puts your safety at risk.

💡 Real-world example: Mike, a Silverado owner in Denver, noticed his brakes felt off during a rainy morning drive. When he got home and scanned the truck, he found the C0267 code. That simple scan helped him catch a dangerous issue before it led to a full brake failure.

Why Is This Code Such a Big Deal?

A lot of drivers ignore warning lights. “It’s probably nothing,” they say. But not with C0267. This isn’t just a flickering bulb; it’s a red flag that your anti-lock brakes are compromised.

If this pump circuit stays open, your ABS module can’t regulate pressure to the brakes, especially during skids or panic stops. That’s where things can go from annoying to dangerous really quickly.

Common Causes Behind the C0267 Code

To fix something, we first need to know what caused it. Here are the most common reasons your Silverado might trigger the C0267 code:

Electrical Failures – A broken wire, bad solder joint, or blown ABS fuse can cause the circuit to go “open.”
Grounding Issues – The G110 ground, located under the driver’s side, is notorious for causing problems when corroded or loose.
ABS Pump Motor Malfunction – If the motor itself has failed, it may need a full replacement.
Bad Electronic Brake Control Module (EBCM) – This module communicates with the ABS system. If it’s faulty, you may need to repair or replace it.
Low Brake Fluid – Not the usual cause, but on 2004–2011 Silverados, low fluid levels sometimes throw the code too.

👉 For a more technical explanation, check this GM Service Bulletin that breaks down known issues with ABS wiring and control units.

Also Read: 2014 Silverado Oil Type and Capacity

Symptoms of C0267: What You’ll Notice While Driving

If you’re not sure whether you’re facing the C0267 issue, watch out for these warning signs:

The ABS warning light or brake light is lit up on the dash.
You might feel like your brakes are “normal,” but during hard stops, they may lock up.
On slippery roads, you’ll notice the ABS doesn’t kick in.
You hear a clicking sound from under the driver’s side, which could be a failing relay or pump motor.

Diagnosing the C0267 Code in Your Silverado

Step-by-Step: How to Begin Troubleshooting

Plug in an OBD-II Scanner
Use a reliable OBD-II scanner that reads ABS codes. Some cheap ones won’t catch the C0267 code. Make sure you get one that interfaces with GM’s ABS module.
Read the Code
Confirm it’s C0267. If you have multiple codes, take note—other codes might help identify whether it’s a wiring issue or a bad module.
Clear the Code Temporarily
Clear it to see if it comes back immediately. If it does, that’s a good sign you’ve got a persistent hardware issue—not just a glitch.

🛠️ Pro Tip: If you’re doing this yourself, consider using a scanner like the Autel MaxiCheck Pro. It gives you access to ABS systems and lets you test components individually.

Hands-On Fixes and Step-by-Step Repair Guide

Now, let’s roll up our sleeves and walk through exactly how to fix C0267 in a Chevy Silverado—the right way.

Whether you’re a weekend DIYer or someone just trying to save money on a mechanic bill, this part gives you the step-by-step troubleshooting and repair process.

Safety First: Preparing for the Repair

Before touching anything, disconnect the battery to avoid any accidental shorts. This isn’t just good practice—it’s necessary when working on ABS electronics.

Also, make sure your truck is parked on a flat surface and the wheels are chocked for safety. Brake systems can be tricky, and you want stability before diving in.

Step 1: Inspect Wiring and Ground Connection (G110)

Let’s begin with the most common culprit—a bad wire or corroded ground connection.

Check the ABS Wiring

Locate the ABS module and pump motor—you’ll typically find it near the driver’s side frame rail.
Follow the wiring harness. Look for frayed wires, corrosion, or signs of overheating.
Use a multimeter to test continuity across suspected sections. If there’s no continuity, the wire is either broken or poorly connected.

Clean Ground G110

This ground point is found under the driver’s door, attached to the frame.
Remove the bolt and use a wire brush to clean both the bolt and frame contact area.
Spray some dielectric grease to prevent future corrosion.
Reattach it firmly and test the connection again.

True story: A Silverado owner in Texas dealt with intermittent ABS issues for months. It turned out his G110 ground was so rusted it couldn’t carry any current. Cleaning that one bolt fixed everything.

Step 2: Test the ABS Pump Motor Directly

If the wiring is good, it’s time to test the pump motor to see if it’s the source of the fault.

How to Test

Use the multimeter to check voltage at the pump motor connector while the ignition is ON.
You should see around 12V at the power wire.
If there’s power, ground the motor directly and listen for any humming or vibration. If it’s silent, the motor is likely dead.

If your pump motor doesn’t respond, it’s likely time for a replacement.

Step 3: Inspect and Replace the ABS Fuse

Even though this seems basic, it’s one of the most overlooked fixes.

Go to the fuse box under the hood.
Look for the ABS fuse—usually 40A.
Pull it out and check for any burn marks or breaks inside the fuse element.
If it’s blown, replace it with one of the same amperage.

Make sure all the battery terminals are clean and tight before testing again. Dirty battery terminals can create resistance, causing components like the ABS pump to fail under load.

Step 4: Check Brake Fluid Level

If you’re working with a 2004–2011 Chevy Silverado, you should also check your brake fluid. Although low brake fluid doesn’t directly cause C0267, some models throw it alongside this error.

Open the brake fluid reservoir.
If the fluid is below the “MIN” line, top it off with DOT 3 brake fluid.
Make sure to bleed the system if you accidentally introduce air while topping off.

👉 Here’s a helpful visual guide to check brake fluid.

Step 5: Test the EBCM (Electronic Brake Control Module)

Now let’s move into the trickier part—diagnosing the EBCM.

Sometimes the internal solder joints on the EBCM fail, creating an open circuit. Instead of replacing the entire module (which can be costly), many DIYers and pros alike choose to reflow the solder joints.

How to Reflow EBCM Joints

Remove the module from the frame using a Torx bit.
Open it carefully and look at the circuit board.
If you see cracked or dull solder joints, heat them with a soldering iron until they become shiny again.
Reassemble everything and retest.

⚠️ Note: This step requires precision. If you’re not confident, take the module to a local electronics repair shop.

Don’t Forget: Clear the Code

Once you’ve completed the repairs, don’t forget to:

Reconnect the battery.
Use your OBD-II scanner to clear the C0267 code.
Restart the truck and make sure no lights pop back up.

Take a short test drive and pay attention to how your ABS behaves during stops. The ABS light should remain off, and braking should feel smooth.

Replacements, Final Checks & Long-Term Confidence

If you’ve already cleaned the ground, inspected the wiring, and even reflowed the EBCM—but the problem still persists—it’s time to consider component replacement and long-term reliability strategies.

Let’s dive into how to finalize the repair, protect your investment, and regain confidence in your Chevy Silverado’s braking system.

When to Replace the ABS Pump Motor or EBCM

If the pump motor fails to activate even with proper voltage, or if the Electronic Brake Control Module (EBCM) shows signs of internal damage that reflowing couldn’t fix, you’ll need to replace one (or both) of these components.

When to Replace the ABS Pump Motor:

You confirmed no response when applying 12V power directly.
It emits a burning smell or clicking sound, but doesn’t activate.
Visible internal corrosion or cracked casing.

You can find reliable OEM and aftermarket replacements from trusted retailers like RockAuto or AutoZone.

When to Replace the EBCM:

Your module has multiple ABS codes, not just C0267.
Reflowing the solder joints didn’t work.
The module doesn’t communicate properly with the OBD-II scanner.

A refurbished EBCM can cost between $150–$300, while new ones may exceed $500, depending on your Silverado’s model year.

Tip: Search for an EBCM using your Silverado’s VIN on parts sites like GMPartsDirect. This ensures 100% compatibility.

Reassembly and Final Checks

After any major fix—especially involving the ABS system—it’s crucial to follow a final checklist:

Reassembly Checklist

Confirm that all electrical connectors are securely fastened.
Check that the ABS pump and EBCM bolts are torqued to spec.
Inspect all harnesses and fuses one last time for signs of wear.

Clear and Verify the Code

Use an OBD-II scanner to clear the C0267 code.
Turn on the ignition without starting the vehicle.
Wait for the ABS light to go off (it should turn off after a few seconds).
If it stays off, take the vehicle for a short test drive and perform controlled stops to verify the ABS functionality.

How to Prevent the C0267 Code from Reoccurring

Now that you’ve put in the work, here’s how you make it last.

Maintain Electrical Grounds

Every 6 months, clean and tighten ground points like G110 to prevent rust or corrosion.
Use dielectric grease during reassembly to protect the terminals.

Monitor Brake Fluid

Keep an eye on the brake fluid level monthly.
Always use the correct DOT 3 fluid and never mix brands or types.

Upgrade Components If Needed

If you live in an area with high humidity or salted roads, consider weatherproofing your ABS and EBCM area. Some owners have had success mounting splash guards or relocating the module slightly higher to avoid moisture damage.

Anecdote: From Code to Confidence

A Silverado owner in Minnesota once told a forum how he’d nearly given up on fixing his C0267 error code after throwing parts at the problem. It wasn’t until he discovered a frayed wire near the G110 ground that everything clicked—literally. With a $3 wire splice and a good ground cleaning, his ABS light turned off for good. Moral of the story? Sometimes it’s the simplest things.

Cost Breakdown: DIY vs. Mechanic

Let’s look at the cost difference between fixing it yourself and hiring a pro:

Repair Item	DIY Cost	Mechanic Cost
OBD-II Scanner	$30–$100	N/A (shop included)
ABS Fuse	$5	$20
ABS Pump Motor	$150–$300	$400–$600+
EBCM Module	$150–$500	$600–$1000+
Labor (Total)	Free	$300–$600
Total Estimate	$200–$600	$900–$1500+

👉 If you’re comfortable with basic tools and diagnostics, DIY repairs can save you over $900.

Why Fixing This Is Worth It

Fixing the C0267 ABS issue doesn’t just restore your vehicle’s braking safety—it also:

Improves resale value of your Chevy Silverado.
Prevents long-term wear on brake components.
Ensures better control on wet or icy roads.
Eliminates annoying dash warning lights.
Boosts your confidence every time you brake.

Final Thoughts: Fix With Confidence

By now, you’ve got the full roadmap on how to diagnose and fix the C0267 pump motor circuit open code. Whether it’s cleaning the G110 ground, replacing the ABS pump motor, or giving your EBCM a fresh solder job, each fix brings you one step closer to peace of mind on the road.

And remember, even if it seems intimidating at first, you’re more capable than you think—especially with the right guide and a little persistence.