AutoCodes – GMC – C1272 GMC

C1272 GMC Code - Left Front TCS Prime Valve Malfunction

Quick Answer

The system relay is energized when the ignition is ON. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C1272 GMC indicates Left Front TCS Prime Valve Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 801

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 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1272 GMC Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the valve solenoids and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) microprocessor activates the valve solenoids by grounding the control circuit. The Solenoid Valve circuit is internal to the EBCM. The EBCM sets the OBDII code when the commanded state of the driver and the actual state of the control circuit do not match.

OBDII Code C1272 GMC - Left Front TCS Prime Valve Malfunction - AutoCodes.com — C1272 GMC Code - Left Front TCS Prime Valve Malfunction

What does this mean?

What are the Possible Causes of the DTC C1272 GMC?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C1272 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 C1272 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.

Need more information about the C1272 GMC code?

Need more information on how to fix the C1272 GMC code? Get Access to Factory Service Manuals

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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 C1272 GMC Code

1. What are the common symptoms of OBDII code C1272 GMC (Left Front TCS Prime Valve Malfunction)?

- Common symptoms include the Traction Control System (TCS) warning light illuminating on the dashboard, decreased traction control functionality, and potential issues with braking performance.

2. What causes the C1272 GMC code to trigger?

- The C1272 code is typically triggered by a malfunction in the left front TCS prime valve, which is responsible for regulating hydraulic pressure in the traction control system.

3. How can I diagnose the C1272 error code related to the left front TCS prime valve?

- Diagnosing the C1272 code involves conducting a thorough inspection of the left front TCS prime valve, checking for any visible damage or leaks, and using a diagnostic scan tool to gather additional information from the vehicle's onboard computer.

4. What are some potential repair tips for addressing the C1272 GMC code?

- Repairing the C1272 code may involve cleaning or replacing the left front TCS prime valve, checking and repairing any damaged wiring or connections related to the valve, and clearing the error code using a diagnostic scan tool.

5. Is it safe to continue driving with the C1272 error code present?

- It is not recommended to drive with the C1272 code active, as it can affect the proper functioning of the traction control system, potentially compromising vehicle safety and performance.

6. Can I reset the C1272 code without fixing the underlying issue?

- While you can clear the error code temporarily, it is important to address the root cause of the C1272 code to prevent it from reoccurring and ensure the proper functioning of the traction control system.

7. How much does it typically cost to repair the left front TCS prime valve for the C1272 code?

- The cost of repairing the left front TCS prime valve can vary depending on the extent of the damage and the labor rates in your area. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Are there any preventive maintenance steps to avoid triggering the C1272 GMC code?

- Regularly inspecting and maintaining the traction control system components, such as the TCS prime valve and associated wiring, can help prevent issues that may trigger the C1272 code.

9. Can extreme weather conditions contribute to the occurrence of the C1272 error code?

- Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of the traction control system components, including the TCS prime valve, and may contribute to triggering the C1272 code.

10. How long does it typically take to repair the left front TCS prime valve for the C1272 GMC code?

- The repair time for addressing the C1272 code can vary depending on the extent of the issue, availability of parts, and the expertise of the mechanic. It is advisable to consult with a professional for a more accurate estimate of repair time.