AutoCodes – GMC – U2615 GMC

U2615 GMC Code - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump Control Module 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: U2615 GMC indicates Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
Common causes: Common causes include Faulty Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump Control Module 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 482

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 Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2615 GMC Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on a high-speed General Motors Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 2. If this message is not received within 400 ms, the Battery Energy Control Module increases its fail count. When this fail count is over X Cal Value (7) during Y Cal Value (10 samples), the diagnostic status of this code is set to Failed and transmitted over high voltage energy high-speed GMLAN bus to the Hybrid/EV Powertrain Control Module 2.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received within 400 ms.

OBDII Code U2615 GMC - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 - AutoCodes.com — U2615 GMC Code - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

What does this mean?

What are the Possible Causes of the DTC U2615 GMC?

Faulty Auxiliary Transmission Fluid Pump Control Module
Auxiliary Transmission Fluid Pump Control Module harness is open or shorted
Auxiliary Transmission Fluid Pump Control Module circuit poor electrical connection
Faulty Hybrid/EV Powertrain Control Module 2

How to Fix the DTC U2615 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 U2615 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 U2615 GMC Code

1. What are common symptoms of OBDII code U2615 in a GMC vehicle?

- Common symptoms include loss of communication between the auxiliary transmission fluid pump control module and the hybrid/EV powertrain control module 2, leading to potential issues with the vehicle's transmission performance.

2. What can cause the OBDII code U2615 to trigger in a GMC vehicle?

- This code can be triggered by a fault in the communication system between the auxiliary transmission fluid pump control module and the hybrid/EV powertrain control module 2, which can be caused by wiring issues, module failures, or software malfunctions.

3. How serious is the U2615 trouble code in a GMC vehicle?

- While the code itself may not directly impact the drivability of the vehicle, it is important to address communication issues between control modules promptly to prevent potential transmission performance issues or other related problems.

4. What are some diagnostic steps to troubleshoot OBDII code U2615 in a GMC vehicle?

- Diagnostic steps may include checking for loose or damaged wiring connections between the control modules, verifying the integrity of the control modules themselves, and using diagnostic tools to assess the communication network for faults.

5. Can I repair the U2615 trouble code in a GMC vehicle myself?

- Repairing this code may require advanced diagnostic tools and knowledge of vehicle communication systems. It is recommended to consult a qualified mechanic or technician with experience in diagnosing and repairing control module communication issues.

6. Is it safe to continue driving with the U2615 trouble code present in a GMC vehicle?

- While the vehicle may still be operable with this code present, it is advised to address the underlying communication issue promptly to prevent potential transmission or drivability problems in the future.

7. How much does it typically cost to repair the U2615 trouble code in a GMC vehicle?

- Repair costs can vary depending on the exact cause of the communication issue and the extent of the repairs needed. It is recommended to obtain estimates from reputable repair shops or dealerships for an accurate cost assessment.

8. Can a software update fix the U2615 trouble code in a GMC vehicle?

- In some cases, a software update provided by the manufacturer may address communication issues between control modules and resolve the U2615 trouble code. It is advisable to consult with a certified technician for proper diagnosis and software updates.

9. Are there any recalls related to the U2615 trouble code in GMC vehicles?

- It is recommended to check with the manufacturer or authorized service centers for any recalls related to the U2615 trouble code in GMC vehicles, as some issues may be covered under warranty or recall campaigns.

10. How can I prevent the U2615 trouble code from recurring in my GMC vehicle?

- Regular maintenance, including checking and maintaining the integrity of wiring connections and control modules, can help prevent communication issues that may trigger the U2615 trouble code. Additionally, addressing any related warning lights or symptoms promptly can help prevent further complications.