Engine-CodesGMC – P071A 2014 GMC Sierra

P071A 2014 GMC Sierra Code - Transmission Tow Mode Switch Circuit

Quick Answer

The P071A diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Transmission Tow Mode Switch Circuit. Common causes include Faulty tow mode switch, Damaged wiring or connectors in the circuit, Corrosion or moisture in the 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
P071A 2014 GMC Sierra indicates Transmission Tow Mode Switch Circuit.
Common causes
Common causes include Faulty tow mode switch, Damaged wiring or connectors in the circuit, Corrosion or moisture in the 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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P071A 2014 GMC Sierra Description

The P071A diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Transmission Tow Mode Switch Circuit. This code indicates that there is a malfunction in the circuit responsible for the transmission tow mode switch. The tow mode switch is a feature that allows the driver to optimize the transmission for towing heavy loads, providing better control and performance when hauling trailers or other heavy equipment.

OBDII Code P071A 2014 GMC Sierra - Transmission Tow Mode Switch Circuit
P071A 2014 GMC Sierra Code - Transmission Tow Mode Switch Circuit

Common Causes of P071A 2014 GMC Sierra

  1. Faulty tow mode switch
  2. Damaged wiring or connectors in the circuit
  3. Corrosion or moisture in the circuit
  4. Issues with the transmission control module
  5. Electrical problems in the transmission system

Symptoms of P071A 2014 GMC Sierra

  1. Inability to engage or disengage tow mode
  2. Transmission shifting erratically while towing
  3. Dashboard warning light related to transmission system
  4. Decreased towing capacity
  5. Reduced fuel efficiency when towing heavy loads

How to Fix P071A 2014 GMC Sierra

  1. Begin by conducting a visual inspection of the tow mode switch, wiring, and connectors to check for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the circuit and check for any shorts or open circuits.
  3. Replace the tow mode switch if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the circuit.
  5. Clear the DTC from the vehicle's computer system and test the transmission tow mode switch to ensure proper functionality.

Cost to Fix P071A 2014 GMC Sierra

The typical repair costs for addressing the P071A code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of parts for replacing the tow mode switch and repairing any damaged wiring or connectors can range from $100 to $300. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair time may vary based on the complexity of the issue. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle.

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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.

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