P2739 2017 GMC Sierra Code - Transmission Control Solenoid Valve 6 Control Circuit High Voltage
Quick Answer
The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 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
- P2739 2017 GMC Sierra indicates Transmission Control Solenoid Valve 6 Control Circuit High Voltage.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 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.
Code P2739 2017 GMC Sierra Description
What are the Possible Causes of the DTC P2739 2017 GMC Sierra?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Control Solenoid Valve
- Transmission Control Solenoid Valve harness is open or shorted
- Transmission Control Solenoid Valve circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P2739 2017 GMC Sierra?
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 P2739 2017 GMC Sierra 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.
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Frequently Asked Questions about P2739 2017 GMC Sierra Code
1. What does the OBDII code P2739 mean on a 2017 GMC Sierra?
P2739 indicates a "Transmission Control Solenoid Valve 6 Control Circuit High Voltage," meaning the ECU has detected an abnormally high voltage in the circuit controlling solenoid valve 6 in the transmission.
2. What are the common symptoms of code P2739 on a 2017 GMC Sierra?
Symptoms include harsh or delayed shifting, failure to shift gears, transmission slipping, reduced fuel efficiency, and the Check Engine Light illuminating.
3. What causes the P2739 code to appear on a 2017 GMC Sierra?
Common causes include a faulty solenoid valve, damaged wiring or connectors in the solenoid circuit, a malfunctioning transmission control module (TCM), or electrical issues such as shorted or corroded connections.
4. Can I drive my 2017 GMC Sierra with a P2739 code?
While the truck may still be drivable, it’s not recommended as it can worsen transmission performance, lead to further damage, or leave you stranded if the issue escalates.
5. How do you diagnose the P2739 code on a 2017 GMC Sierra?
Diagnosis involves checking the wiring and connectors for damage or corrosion, testing the solenoid for proper operation, and using a multimeter to measure circuit voltage and resistance.
6. How do you fix the P2739 code on a 2017 GMC Sierra?
Repairs may include replacing the faulty solenoid, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P2739 code on a 2017 GMC Sierra?
Repair costs vary but typically range from $150 to $450, depending on whether you need to replace a solenoid, repair wiring, or address TCM issues.
8. Can a low transmission fluid level cause the P2739 code?
While low fluid levels don’t directly cause this code, they can lead to poor transmission performance, which might indirectly contribute to solenoid issues.
9. Does clearing the P2739 code fix the problem?
Clearing the code may turn off the Check Engine Light temporarily, but it won’t fix the underlying issue. Proper diagnosis and repair are needed to prevent the code from returning.
10. Can a bad battery cause the P2739 code on a 2017 GMC Sierra?
A weak or failing battery can cause electrical issues that may affect the transmission control system, but this is less common. It’s worth checking the battery and charging system during diagnosis.
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