P071A 2015 GMC Sierra Code - Transmission Tow Mode Switch Circuit
Quick Answer
The P071A diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to the Transmission Tow Mode Switch Circuit. Common causes include Faulty tow mode switch, Wiring issues in the transmission tow mode circuit, Malfunctioning transmission control module. 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 2015 GMC Sierra indicates Transmission Tow Mode Switch Circuit.
- Common causes
- Common causes include Faulty tow mode switch, Wiring issues in the transmission tow mode circuit, Malfunctioning transmission control module.
- 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 P071A 2015 GMC Sierra Description
The P071A diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to the Transmission Tow Mode Switch Circuit. This code indicates that there is a malfunction in the circuit that controls the transmission tow mode switch. The tow mode switch is a feature in many modern vehicles that allows the driver to adjust the transmission's shift points and torque converter lockup to optimize performance when towing heavy loads.
Common Causes of P071A 2015 GMC Sierra
- Faulty tow mode switch
- Wiring issues in the transmission tow mode circuit
- Malfunctioning transmission control module
- Defective transmission range sensor
- Corrosion or poor connections in the circuit
Symptoms of P071A 2015 GMC Sierra
- Erratic shifting behavior
- Harsh or delayed shifting
- Transmission slipping
- Loss of torque converter lockup
- Illumination of the check engine light
How to Fix P071A 2015 GMC Sierra
- Begin by conducting a thorough inspection of the tow mode switch, wiring, and related components to identify any visible damage or issues.
- Use a multimeter to test the continuity of the circuit and check for any shorts or open circuits.
- Replace the tow mode switch if it is found to be faulty, ensuring proper installation and connection.
- Repair any damaged wiring or connectors in the circuit to restore proper functionality.
- Clear the DTC from the vehicle's computer using a diagnostic scan tool and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix P071A 2015 GMC Sierra
The typical repair costs for addressing the P071A code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, parts for this repair, such as a tow mode switch or wiring components, may range from $50 to $200. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair.
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Frequently Asked Questions about P071A 2015 GMC Sierra Code
1. What does the OBDII code P071A mean for a 2015 GMC Sierra?
P071A indicates an issue with the Transmission Tow Mode Switch Circuit, which is responsible for enabling or disabling tow mode in the vehicle.
2. What are the common symptoms of code P071A in a 2015 GMC Sierra?
Symptoms may include the tow/haul mode not engaging, an illuminated check engine light, or reduced transmission performance during towing.
3. What causes the P071A code to appear?
Common causes include a faulty tow mode switch, damaged wiring or connectors in the circuit, or an issue with the transmission control module (TCM).
4. Can a damaged tow mode switch cause the P071A code?
Yes, a damaged or malfunctioning tow mode switch is a common cause of this code.
5. How can I diagnose the P071A code in my 2015 GMC Sierra?
You can diagnose the code by inspecting the tow mode switch, checking the wiring and connectors for damage, and using a scan tool to monitor the transmission control module.
6. Is the P071A code serious?
While it may not immediately impact drivability, it can prevent proper towing performance, which could lead to transmission strain if the vehicle is used for towing without tow mode.
7. How do I fix the P071A code on my GMC Sierra?
Repairs typically involve replacing the tow mode switch, repairing damaged wiring or connectors, or reprogramming or replacing the transmission control module.
8. Can I still tow with the P071A code active?
It’s not recommended to tow with this code active, as the transmission may not optimize its performance for towing, potentially causing damage.
9. How much does it cost to repair the P071A code?
Repair costs vary depending on the issue but could range from $50 to $300 for parts and labor, depending on whether the switch, wiring, or TCM needs repair or replacement.
10. Can clearing the P071A code solve the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue needs to be resolved to prevent the code from reappearing.
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