AutoCodes – GMC – P1E39 GMC

P1E39 GMC Code - Auxiliary Transmission Fluid Pump Inverter Performance

Quick Answer

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump circuit poor electrical connection. 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: P1E39 GMC indicates Auxiliary Transmission Fluid Pump Inverter Performance.
Common causes: Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump circuit poor electrical connection.
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 Popularity 698

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E39 GMC Description

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. Each motor control module controls its respective motor through the sequencing actuation of high-current switching transistors called insulated gate bipolar transistors. Each insulated gate bipolar transistor assembly is monitored for fault conditions. The motor control modules are part of the power inverter module and are not serviced separately.

OBDII Code P1E39 GMC - Auxiliary Transmission Fluid Pump Inverter Performance - AutoCodes.com — P1E39 GMC Code - Auxiliary Transmission Fluid Pump Inverter Performance

What does this mean?

What are the Possible Causes of the DTC P1E39 GMC?

Faulty Auxiliary Transmission Fluid Pump
Auxiliary Transmission Fluid Pump harness is open or shorted
Auxiliary Transmission Fluid Pump circuit poor electrical connection

How to Fix the DTC P1E39 GMC?

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 P1E39 GMC 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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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.

Frequently Asked Questions about P1E39 GMC Code

1. What are the common symptoms of OBDII code P1E39 in a GMC related to the Auxiliary Transmission Fluid Pump Inverter?

- Common symptoms include poor transmission performance, harsh shifting, and potential illumination of the check engine light.

2. What are some possible causes of OBDII code P1E39 GMC related to the Auxiliary Transmission Fluid Pump Inverter?

- Potential causes may include a faulty auxiliary transmission fluid pump inverter, wiring issues, or a malfunctioning transmission fluid pump.

3. How can I diagnose OBDII code P1E39 GMC for the Auxiliary Transmission Fluid Pump Inverter issue?

- Diagnosis typically involves using a scan tool to read the trouble code, checking the transmission fluid level and condition, and inspecting the wiring and connections related to the inverter.

4. Can I continue driving my GMC with OBDII code P1E39 related to the Auxiliary Transmission Fluid Pump Inverter issue?

- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission damage and potential safety hazards.

5. What are the repair options for OBDII code P1E39 GMC related to the Auxiliary Transmission Fluid Pump Inverter?

- Repair options may include replacing the faulty auxiliary transmission fluid pump inverter, repairing any damaged wiring or connections, and resetting the trouble code.

6. How much does it typically cost to repair OBDII code P1E39 in a GMC for the Auxiliary Transmission Fluid Pump Inverter issue?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Are there any preventive maintenance tips to avoid OBDII code P1E39 related to the Auxiliary Transmission Fluid Pump Inverter in a GMC?

- Regularly checking and maintaining the transmission fluid level and quality, as well as addressing any transmission issues promptly, can help prevent this code from appearing.

8. Can a DIY enthusiast with automotive knowledge repair OBDII code P1E39 related to the Auxiliary Transmission Fluid Pump Inverter in a GMC?

- While some DIY enthusiasts may have the skills to diagnose and repair this issue, it is recommended to consult with a professional mechanic due to the complexity of transmission systems.

9. Is OBDII code P1E39 GMC related to the Auxiliary Transmission Fluid Pump Inverter a common issue in certain GMC models?

- This code may be more common in specific GMC models that are equipped with auxiliary transmission fluid pump inverters, so it's essential to check for any related recalls or service bulletins.

10. How soon should I address OBDII code P1E39 in a GMC related to the Auxiliary Transmission Fluid Pump Inverter once it appears?

- It is advisable to address this code as soon as possible to prevent further damage to the transmission system and ensure the vehicle's safe operation.