AutoCodes – GMC – C12E8 GMC

C12E8 GMC Code - ABS Pump Motor Stuck

Quick Answer

The ABS Pump Motor is a bi-directional motor and is an internal part of the Brake Pressure Modulator. Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C12E8 GMC indicates ABS Pump Motor Stuck.
Common causes: Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 729

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C12E8 GMC Description

The ABS Pump Motor is a bi-directional motor and is an internal part of the Brake Pressure Modulator. There are three solid state relays in the electronic Brake Pressure Modulator that operate the pump. The ABS Pump Motor runs every few brake stops in order to fill the high pressure accumulator with brake fluid. The Anti-Lock Brake System (ABS) Module monitors the ABS Pump Motor. The ABS Module sets the OBDII code when the ABS Pump Motor is not to factory specifications.

OBDII Code C12E8 GMC - ABS Pump Motor Stuck - AutoCodes.com — C12E8 GMC Code - ABS Pump Motor Stuck

What does this mean?

What are the Possible Causes of the DTC C12E8 GMC?

Faulty Brake Pressure Modulator
Brake Pressure Modulator harness is open or shorted
Brake Pressure Modulator circuit poor electrical connection

How to Fix the DTC C12E8 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C12E8 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C12E8 GMC Code

1. What are common symptoms of OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

Common symptoms include the ABS warning light illuminating on the dashboard, potential loss of ABS functionality, and unusual noises coming from the ABS system.

2. What can cause the ABS Pump Motor to get stuck triggering code C12E8 in a GMC vehicle?

Potential causes include a malfunctioning ABS pump motor, damaged wiring or connectors, low brake fluid levels, or issues with the ABS control module.

3. How serious is OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

This code indicates a malfunction in the ABS system, which can affect the vehicle's ability to properly control braking in certain situations. It is important to address this issue promptly.

4. Can driving with OBDII code C12E8 GMC (ABS Pump Motor Stuck) cause further damage?

Continuing to drive with this issue may result in decreased braking performance and compromised safety. It is recommended to have the ABS system inspected and repaired as soon as possible.

5. What are some DIY repair tips for addressing OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

DIY repair tips may include checking brake fluid levels, inspecting wiring and connectors for damage, and ensuring proper ABS system operation through diagnostic tools. However, complex repairs may require professional assistance.

6. How can a mechanic diagnose OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

A mechanic can use a scan tool to retrieve the specific fault code, conduct a visual inspection of the ABS system components, perform electrical tests on the ABS pump motor, and check for any related issues in the braking system.

7. Is it safe to drive the vehicle to a repair shop with OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

If the vehicle's braking performance is not significantly affected, driving to a repair shop is generally safe. However, if you notice any unusual braking behavior, it is advisable to have the vehicle towed to prevent further damage or accidents.

8. How much does it typically cost to repair OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

The cost of repair can vary depending on the underlying cause of the issue, labor rates, and replacement parts needed. It is recommended to obtain quotes from different repair shops for an accurate estimate.

9. Can resetting the OBDII code C12E8 GMC (ABS Pump Motor Stuck) resolve the issue temporarily?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the ABS pump motor to be stuck. It is crucial to address the root cause of the issue for a lasting solution.

10. How long does it take to repair OBDII code C12E8 GMC (ABS Pump Motor Stuck)?

The repair time can vary depending on the complexity of the issue and the availability of parts. Simple fixes like replacing a fuse or connector may take less time, while more extensive repairs could require several hours or even days.