P2738 2018 GMC Sierra Code - Transmission Control Solenoid Valve 6 Control Circuit Low 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
- P2738 2018 GMC Sierra indicates Transmission Control Solenoid Valve 6 Control Circuit Low 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 P2738 2018 GMC Sierra Description
What are the Possible Causes of the DTC P2738 2018 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 P2738 2018 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 P2738 2018 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.
Need more information about the P2738 2018 GMC Sierra code?
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Frequently Asked Questions about P2738 2018 GMC Sierra Code
What does the OBDII code P2738 mean on a 2018 GMC Sierra?
P2738 indicates a low voltage issue in the Transmission Control Solenoid Valve 6 Control Circuit, which affects the transmission's ability to shift properly.
What are the common symptoms of code P2738 on a 2018 GMC Sierra?
Symptoms may include harsh or delayed shifting, transmission slipping, decreased fuel efficiency, or the Check Engine Light illuminating.
What causes the P2738 code to appear on a 2018 GMC Sierra?
Common causes include a faulty solenoid, wiring or connector issues in the solenoid circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).
Can low transmission fluid trigger the P2738 code?
Yes, low or contaminated transmission fluid can cause solenoid performance issues, leading to this code.
How do you diagnose the P2738 code on a 2018 GMC Sierra?
Diagnosis typically involves scanning for additional codes, inspecting wiring and connectors for damage, checking transmission fluid levels, and testing the solenoid's electrical resistance.
Can you drive with the P2738 code on a 2018 GMC Sierra?
Driving is not recommended, as this code can cause transmission shifting problems that may lead to further damage or unsafe driving conditions.
How do you fix the P2738 code on a 2018 GMC Sierra?
Repairs may include replacing the faulty solenoid, repairing damaged wiring or connectors, refilling or flushing the transmission fluid, or reprogramming the TCM.
What tools are required to troubleshoot the P2738 code?
A professional OBDII scanner, a multimeter for electrical testing, and basic tools for accessing the transmission components are commonly used.
How much does it cost to repair the P2738 code on a 2018 GMC Sierra?
Repair costs can vary widely, ranging from $100 for minor electrical repairs to over $500 if the solenoid or TCM needs replacement.
Does a faulty TCM always cause the P2738 code?
No, while a faulty TCM can cause this code, it’s more commonly related to solenoid or wiring issues. A thorough inspection is necessary to pinpoint the exact cause.
Discuss the causes and fixes for P2738 2018 GMC Sierra OBDII Code
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