P2738 2017 GMC Sierra Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
Quick Answer
The P2738 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Transmission Control Solenoid Valve 6 Control Circuit Low Voltage. Common causes include Damaged wiring or connectors in the transmission control solenoid valve circuit, Faulty transmission control module, Malfunctioning transmission control solenoid valve. 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
- P2738 2017 GMC Sierra indicates Transmission Control Solenoid Valve 6 Control Circuit Low Voltage.
- Common causes
- Common causes include Damaged wiring or connectors in the transmission control solenoid valve circuit, Faulty transmission control module, Malfunctioning transmission control solenoid valve.
- 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 P2738 2017 GMC Sierra Description
The P2738 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Transmission Control Solenoid Valve 6 Control Circuit Low Voltage. This code indicates that there is a problem with the electrical circuit that controls the transmission control solenoid valve 6, causing it to operate at a lower voltage than expected. The transmission control solenoid valves are crucial components in the operation of the vehicle's automatic transmission system, as they regulate the flow of transmission fluid to control gear shifting and other transmission functions.
Common Causes of P2738 2017 GMC Sierra
- Damaged wiring or connectors in the transmission control solenoid valve circuit
- Faulty transmission control module
- Malfunctioning transmission control solenoid valve
- Battery or alternator issues affecting voltage supply to the circuit
- Corrosion or contamination in the transmission control solenoid valve circuit
Symptoms of P2738 2017 GMC Sierra
- Harsh or delayed shifting
- Slipping gears
- Limp mode activation
- Check engine light illuminated
- Reduced fuel efficiency
How to Fix P2738 2017 GMC Sierra
- Begin by conducting a thorough inspection of the transmission control solenoid valve circuit, checking for any damaged wiring or connectors.
- Test the transmission control solenoid valve and the transmission control module to determine if either component is faulty.
- If necessary, replace the faulty transmission control solenoid valve or transmission control module.
- Clear the DTC from the vehicle's computer memory and perform a test drive to ensure the issue has been resolved.
- Finally, reset the vehicle's transmission adaptive memory to ensure proper operation.
Cost to Fix P2738 2017 GMC Sierra
The typical repair costs for addressing the P2738 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of replacing a transmission control solenoid valve or transmission control module can range from $200 to $600, excluding labor. The total repair cost, including parts and labor, may range from $300 to $1000. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate.
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Frequently Asked Questions about P2738 2017 GMC Sierra Code
1. What does the OBDII code P2738 mean on a 2017 GMC Sierra?
P2738 indicates a low voltage issue in the control circuit for Transmission Control Solenoid Valve 6, which helps regulate transmission fluid flow for proper gear shifting.
2. What are the common symptoms of a P2738 code?
Symptoms may include harsh or delayed shifting, transmission slipping, poor fuel efficiency, or the Check Engine Light being illuminated.
3. What causes the P2738 code on a GMC Sierra?
Common causes include a faulty transmission control solenoid, damaged wiring, corroded electrical connections, low transmission fluid levels, or a failing transmission control module (TCM).
4. Can I still drive my 2017 GMC Sierra with a P2738 code?
You may be able to drive the vehicle, but it is not recommended as it can lead to further transmission damage and unsafe driving conditions.
5. How is the P2738 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the wiring and connections for damage, test the solenoid's resistance, and check the transmission fluid level and quality.
6. How can I fix the P2738 code on my GMC Sierra?
Repairs may involve replacing the faulty solenoid, repairing or replacing damaged wiring, cleaning corroded connections, or updating/replacing the TCM if needed.
7. Could low transmission fluid cause the P2738 code?
Yes, low or contaminated transmission fluid can cause pressure issues that affect the solenoid's operation and trigger the code.
8. How much does it cost to repair a P2738 code?
Repair costs vary but could range from $150 to $400 for solenoid replacement and wiring repairs. If the TCM needs replacement, costs may exceed $1,000.
9. Can a bad battery cause the P2738 code?
A weak or failing battery can cause voltage drops, potentially affecting the solenoid circuit and triggering the code.
10. How can I prevent the P2738 code from recurring?
Regularly maintain your transmission by checking fluid levels, addressing wiring issues promptly, and ensuring the TCM and electrical system are functioning properly.
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