AutoCodes – GMC – U2616 2016 GMC Sierra

U2616 2016 GMC Sierra Code - Fuel Pump Driver Control Module Lost Communication With ECM

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine 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: U2616 2016 GMC Sierra indicates Fuel Pump Driver Control Module Lost Communication With ECM.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine 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 400

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 Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2616 2016 GMC Sierra 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. The Diagnostic Trouble Code (DTC) will be set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2616 2016 GMC Sierra - Fuel Pump Driver Control Module Lost Communication With ECM - AutoCodes.com — U2616 2016 GMC Sierra Code - Fuel Pump Driver Control Module Lost Communication With ECM

What does this mean?

What are the Possible Causes of the DTC U2616 2016 GMC Sierra?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection
Faulty Fuel Pump Driver Control Module

How to Fix the DTC U2616 2016 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 U2616 2016 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 U2616 2016 GMC Sierra code?

Need more information on how to fix the U2616 2016 GMC Sierra code? Get Access to Factory Service Manuals

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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 U2616 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code U2616 in a 2016 GMC Sierra related to the Fuel Pump Driver Control Module lost communication with ECM?

- Common symptoms include issues with starting the vehicle, engine stalling, rough idling, and in some cases, the vehicle may not start at all.

2. What are the possible causes of OBDII code U2616 in a 2016 GMC Sierra?

- The code U2616 can be triggered by a faulty Fuel Pump Driver Control Module, a malfunctioning Engine Control Module (ECM), damaged wiring or connectors, or a communication error between modules.

3. How can I diagnose the cause of OBDII code U2616 in my 2016 GMC Sierra?

- To diagnose the issue, it is recommended to perform a thorough inspection of the wiring and connectors, check the fuel pump driver module functionality, and conduct a scan tool diagnosis to identify the exact cause of the communication error.

4. Can I still drive my 2016 GMC Sierra with the OBDII code U2616 present?

- It is not recommended to drive the vehicle with the U2616 code present, as it can lead to potential issues with engine performance, starting the vehicle, and overall drivability.

5. How do I repair OBDII code U2616 in my 2016 GMC Sierra?

- Repairing the U2616 code involves addressing the root cause of the communication error, which may include repairing or replacing the Fuel Pump Driver Control Module, fixing wiring issues, or addressing ECM malfunctions.

6. Is it possible to reset the OBDII code U2616 in a 2016 GMC Sierra without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is essential to address the underlying cause of the code to prevent it from reoccurring and ensure the proper functioning of the vehicle.

7. Can a DIY enthusiast fix OBDII code U2616 in a 2016 GMC Sierra?

- Depending on your technical skills and access to tools, some DIY enthusiasts may be able to address the U2616 code by inspecting wiring, connectors, and replacing components like the Fuel Pump Driver Control Module.

8. How much does it typically cost to repair OBDII code U2616 in a 2016 GMC Sierra?

- The cost of repairing the U2616 code can vary depending on the cause of the issue, the need for replacement parts, and labor costs. It is advisable to consult a mechanic for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code U2616 in a 2016 GMC Sierra?

- Regular maintenance, inspecting wiring harnesses for damage, and addressing any communication issues promptly can help prevent the occurrence of code U2616 in your 2016 GMC Sierra.

10. Will OBDII code U2616 cause my 2016 GMC Sierra to fail an emissions test?

- Yes, the presence of code U2616 can cause your 2016 GMC Sierra to fail an emissions test, as it indicates a communication error related to the fuel system, which can affect emissions control.