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Engine-Codes – GMC – P0960 GMC

P0960 GMC Code - Line Pressure Control Solenoid Valve Control Circuit Open

Quick Answer

The P0960 GMC code indicates that there is an issue with the Line Pressure Control Solenoid Valve Control Circuit being open. Common causes include Faulty Line Pressure Control Solenoid Valve, Wiring or electrical connection issues, Corrosion or damage to the solenoid valve control circuit. 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
P0960 GMC indicates Line Pressure Control Solenoid Valve Control Circuit Open.
Common causes
Common causes include Faulty Line Pressure Control Solenoid Valve, Wiring or electrical connection issues, Corrosion or damage to the solenoid valve control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0960 GMC Description

The P0960 GMC code indicates that there is an issue with the Line Pressure Control Solenoid Valve Control Circuit being open. The Line Pressure Control Solenoid Valve is a crucial component of the transmission system in a vehicle. It is responsible for regulating the hydraulic pressure within the transmission, which is essential for smooth gear shifting and overall performance.

OBDII Code P0960 GMC - Line Pressure Control Solenoid Valve Control Circuit Open
P0960 GMC Code - Line Pressure Control Solenoid Valve Control Circuit Open

Common Causes of P0960 GMC

  1. Faulty Line Pressure Control Solenoid Valve
  2. Wiring or electrical connection issues
  3. Corrosion or damage to the solenoid valve control circuit
  4. Poor transmission fluid condition or level
  5. Internal transmission damage or wear

Symptoms of P0960 GMC

  1. Harsh or erratic shifting
  2. Delayed engagement when shifting gears
  3. Slipping gears
  4. Transmission overheating
  5. Illumination of the Check Engine Light

How to Fix P0960 GMC

  1. Begin by conducting a thorough inspection of the transmission system to identify the exact cause of the issue.
  2. Test the Line Pressure Control Solenoid Valve and its control circuit using a multimeter to check for continuity and proper functioning.
  3. Replace the Line Pressure Control Solenoid Valve if it is found to be faulty.
  4. Repair any damaged wiring or connectors in the control circuit and ensure proper connections.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0960 GMC

The cost of repairing a P0960 GMC code can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. In general, the cost of replacing a Line Pressure Control Solenoid Valve can range from $150 to $300, while the cost of labor can range from $80 to $150 per hour. Overall, the total repair cost for this issue could range from $250 to $500 or more, depending on the extent of the repairs needed. It's recommended to obtain quotes from multiple repair shops to ensure a fair price for the repair.

What does this mean?

Tech Notes for P0960 GMC





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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 P0960 GMC Code

1. What does the OBDII code P0960 mean on a GMC vehicle?

P0960 indicates an open circuit issue in the Line Pressure Control Solenoid Valve Control Circuit, which regulates hydraulic pressure in the transmission.

2. What are the common symptoms of the P0960 code on a GMC?

Symptoms include harsh or erratic shifting, transmission slippage, a delayed response when shifting gears, and the check engine light illuminating.

3. What causes the P0960 code to appear in a GMC?

Common causes include a damaged or faulty line pressure control solenoid, wiring issues like corrosion or shorts, a failed transmission control module (TCM), or low transmission fluid.

4. Can I drive my GMC with a P0960 code?

Driving with a P0960 code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.

5. How do I diagnose the P0960 code in a GMC?

Diagnosing involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage, testing the line pressure control solenoid, and checking the transmission fluid level.

6. How do I fix the P0960 code on a GMC?

Repairs may include replacing the line pressure control solenoid, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the TCM if it’s faulty.

7. How much does it cost to repair a P0960 code on a GMC?

Repair costs vary but typically range from $100 to $400 for parts and labor, depending on whether the solenoid, wiring, or TCM needs replacement.

8. Can low transmission fluid cause the P0960 code?

Yes, low or dirty transmission fluid can affect line pressure and contribute to the P0960 code.

9. What tools are needed to troubleshoot the P0960 code on a GMC?

Key tools include an OBDII scanner, a multimeter for testing electrical circuits, and basic hand tools to access the transmission components.

10. Can a faulty TCM cause the P0960 code in a GMC?

Yes, a malfunctioning transmission control module can trigger the P0960 code by failing to properly control the line pressure solenoid.

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