Having had that C0267 pop out on your Chevy Silverado is likely due to an ABS issue. While annoying, it’s something that can be corrected if you know what you are doing. So, let’s get down to business. In this guide, I’m going to take you through the diagnosis and troubleshooting procedure.
Understanding the C0267 Code
Before we outline how to troubleshoot it, it is essential to understand what exactly C0267 means and what you are up for.
What Does C0267 Mean?
The specific concern in the C0267 code is that the pump motor of the ABS is an open circuit. The basic meaning of this is that the ABS relies on a pump in your brake system, which provides hydraulic pressure whenever you need it most to prevent your wheels from locking up under hard braking conditions.
Although it rarely will, when the computer determines that the pump motor is not operating correctly, it will be able to throw the C0267 code and disable the ABS. Although your truck will still brake, it won’t have the added safety of ABS. It could be hazardous then, slick or panic-braking situations.
Symptoms of a C0267 Code
You probably feel a few symptoms if the C0267 code is live on your Silverado. Here are some common signs:
Some of the most visible symptoms include:
- ABS warning light: It is reflected by the illuminated ABS light on your dashboard.
- Non-engagement of ABS by car: You would realize that the anti-lock braking system of your car does not engage, especially when you are applying forceful brakes, or roads have become slippery.
- Softer brake pedal or harder than normal: The brake pedal feels different.
- Faulty or inadequate braking: You experience difficulty in proper braking, especially during emergencies without the help of the ABS.
Causes of a C0267 Code
Numerous conditions would prompt the C0267 code. Let’s look at them, starting with the most common causes below:
- Faulty ABS pump motor: The pump motor itself has gone bad because of old age or wear and tear.
- Electrical issues: Connections could be loose, there is corrosion in the wires, or there may be electrical component damage that is cutting power to the pump motor.
- Blown Fuses: The blown fuses of the ABS may blow out the circuit and create a failed pump motor, which results in code C0267.
- ABS module malfunction: The malfunction in the ABS module may sometimes also cause it to fail to communicate properly with the pump motor and return with a fault code C0267.
Diagnosis The Problem
So, how do you really diagnose the problem? It may take some time for it, but that’s what it takes to do it right.
Checking for Blown Fuses or Loose Connections
Start by checking the most obvious and easiest ones to fix.
- Fuse box: Check if the ABS fuse in your Silverado fuse box has blown. If the fuse is blown, you can easily replace it with a new one. Of course, check your owner’s manual to determine where the fuse is located.
- Loose connections: Make sure to inspect the whole wiring surrounding the ABS pump motor and module. Maybe it’s because of a loose or corroded connection.
Pump Motor Test
Then, test the ABS pump motor to see whether it works fine or not. To perform this step, follow the instructions:
- Multimeter test: test for continuity with a multimeter on the motor circuit. An open circuit might mean you need a new motor.
- Soundcheck: When your ABS system should be active, check if you hear the pump motor to be running. The lack of noise is not good news.
Checking the ABS Module
If the pump motor is okay, it might be a failure in the ABS module. This is what you can do to check:
- Scan tool: Connect a scan tool on an OBD-II port and check for other ABS codes. If the ABS module is faulty, there might be related trouble codes.
- Visual inspection: Check for rust or degradation around the actual ABS module.
Troubleshooting Tips
Now that you have identified the problem, let’s look at some troubleshooting tips to make the fix as smooth as possible.
Common Mistakes to Avoid
- Skipping steps: Don’t just start replacing parts. It could be something as simple as a blown fuse.
- Neglecting the ABS module: Many people assume it’s always the pump motor, but the ABS module could be at fault, too.
- Don’t forget to reset the code: Once you’re done with the repair, don’t forget to have your code reset with a scan tool.
Tools and Equipment Needed
Before you break everything loose, take a moment to ensure you have all the proper tools:
- Multimeter
- Socket set
- Scan tool
- Replacing the ABS pump motor or module if that’s what you need to repair
- Safety gloves and glasses
Safety Precautions
When you’re working on your brake system, things can get pretty dangerous if you aren’t safe. Remember to always:
- Always disconnect the battery when working on the electrical parts.
- Wearing gloves and goggles will protect you from accidental shocks or brake fluid splashes.
- Raise your vehicle by positioning jack stands if you must raise it.
Step-by-Step Procedure
Diagnosis is now concluded, so let’s go down to solving it! Hereunder is a simple step-by-step procedure for replacing the malfunctioning ABS pump motor.
Disassembling Components
- Lift the truck: If needed, jack up your Silverado and use a few jack stands.
- Locate the ABS module: The ABS module should be mounted close to the brake master cylinder.
- Disconnect the battery: Before you begin with any electrical work, you have to disconnect the negative terminal of the battery.
- Remove the ABS module: Using a socket set, carefully take off the bolts that secure the ABS module in place.
- Pump Motor Wiring Removal: Make sure to remove all electrical connectors from the pump motor.
Replacement of Damaged Part
- New Pump Motor Mounting: Mount in the new pump motor. Mount with pump motor bolts.
- Replug the wiring: Plug on electrical connectors to the new motor.
Reassembly and Testing
- ABS Module replacement: Put back the ABS module and mount it to its location.
- Reconnect the battery: Reinstall the negative terminal to your battery.
- Test the ABS: Drive your truck in order to check if the ABS is operating within its normal bounds.
- Clear the code: Use your scan tool to clear the C0267 code.
Pre-Service Maintenance Tips
- Clean your ABS: Check your ABS wiring and components for corrosion or wear.
- Brake fluid service: Top up your brake fluid to ensure it is clean and at the right level. This will ensure that your ABS does not have future problems.
- Scan it regularly: An OBD-II scan tool is available for checking out any new codes.
Cost and Labour Estimates
Let’s talk money—how much will this fix set you back?
- Parts Cost: An ABS pump motor for a new Silverado will range between 150 and 400 dollars on average, depending on the year and model.
- Labor Costs: Labour calls your truck into a mechanic to do this; the result is you’ll pay anywhere between 200 to 600 dollars in labor, depending on how hard he has to work.
- DIY savings: By doing it yourself, you could save a significant amount of money in labor, so all you would have to pay for is the parts.
Warranty Information
If your Silverado is still under warranty, well, just forget the cost of parts and labor. Look at your warranty agreement to see if repairs to the ABS are included.
Diagnosing and fixing the C0267 of your Chevy Silverado is not a walk in the park; it does, however, take a couple of steps that one can follow using appropriate tools and methods and checking for some things such as fuses and connections and testing the ABS pump motor and module.
All you need to do is remember some precautions about safety, not skip any step, and make sure you clear the code before you’re done. That’s all the DIY effort required on your part; otherwise, the labor saved will usually be borne by you as the ABS gets back in working condition, bringing a much safer ride.
