AutoCodes – GMC – U2164 GMC

U2164 GMC Code - Lost Communication With Right Rear Door Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Right Rear Door Module (RRDM), Right Rear Door Module harness is open or shorted, Right Rear Door 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: U2164 GMC indicates Lost Communication With Right Rear Door Module.
Common causes: Common causes include Faulty Right Rear Door Module (RRDM), Right Rear Door Module harness is open or shorted, Right Rear Door 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 598

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2164 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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2164 GMC - Lost Communication With Right Rear Door Module - AutoCodes.com — U2164 GMC Code - Lost Communication With Right Rear Door Module

What does this mean?

What are the Possible Causes of the DTC U2164 GMC?

Faulty Right Rear Door Module (RRDM)
Right Rear Door Module harness is open or shorted
Right Rear Door Module circuit poor electrical connection

How to Fix the DTC U2164 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 U2164 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 U2164 GMC Code

1. What are the common symptoms of OBDII code U2164 GMC "Lost Communication With Right Rear Door Module"?

- Common symptoms include non-functional power windows, door locks, and interior lights on the right rear door.

2. What are the possible causes of OBDII code U2164 GMC?

- The code U2164 can be caused by a faulty right rear door module, damaged wiring harness, loose connections, or a malfunctioning body control module.

3. How can I diagnose the issue related to OBDII code U2164 GMC?

- To diagnose the issue, you can start by checking the wiring and connections related to the right rear door module, testing the module itself, and scanning the vehicle for additional trouble codes.

4. Can I still drive my vehicle with the U2164 GMC trouble code?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid any inconvenience or safety concerns.

5. How can I repair OBDII code U2164 GMC "Lost Communication With Right Rear Door Module"?

- Repairing this code may involve replacing the right rear door module, repairing damaged wiring, securing loose connections, or reprogramming the body control module if necessary.

6. Will resetting the trouble codes make the U2164 GMC code disappear permanently?

- Resetting the trouble codes may temporarily clear the code, but if the underlying issue causing the communication loss with the right rear door module is not fixed, the code is likely to reappear.

7. Is it possible for a DIY enthusiast to fix OBDII code U2164 GMC at home?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code at home by following repair guides and using diagnostic tools.

8. Can extreme weather conditions cause the U2164 GMC trouble code to appear?

- Extreme weather conditions can potentially affect the electrical components related to the right rear door module, leading to communication issues and triggering the U2164 trouble code.

9. How long does it typically take to repair OBDII code U2164 GMC?

- The repair time for this code can vary depending on the exact cause of the issue and the complexity of the repair needed, but it can usually be resolved within a few hours to a day.

10. Is it necessary to visit a dealership for OBDII code U2164 GMC repairs, or can independent mechanics handle it?

- Independent mechanics with experience in diagnosing and repairing electrical issues in vehicles should be able to handle the repair for OBDII code U2164 GMC, potentially offering a more cost-effective solution than dealership services.