AutoCodes – GMC – U0210 GMC

U0210 GMC Code - Lost Communication With Rear Seat Heating Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Rear Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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: U0210 GMC indicates Lost Communication With Rear Seat Heating Control Module.
Common causes: Common causes include Faulty Rear Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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 566

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0210 GMC Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Rear Seat Heating Control Module has not been received.

OBDII Code U0210 GMC - Lost Communication With Rear Seat Heating Control Module - AutoCodes.com — U0210 GMC Code - Lost Communication With Rear Seat Heating Control Module

What does this mean?

What are the Possible Causes of the DTC U0210 GMC?

Faulty Rear Seat Heating Control Module
Rear Seat Heating Control Module harness is open or shorted
Rear Seat Heating Control Module circuit poor electrical connection

How to Fix the DTC U0210 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 U0210 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 U0210 GMC Code

1. What are the common symptoms of OBDII code U0210 in a GMC related to the Rear Seat Heating Control Module?

- Common symptoms may include non-functioning rear seat heating, failure of rear seat climate control, and a warning light on the dashboard.

2. What are some possible causes of the U0210 code indicating a lost communication with the Rear Seat Heating Control Module in a GMC?

- Possible causes include a faulty rear seat heating control module, damaged wiring or connectors, a blown fuse, or a communication network issue.

3. How can I diagnose the U0210 code in my GMC related to the Rear Seat Heating Control Module?

- Diagnose the code by checking the wiring and connectors for any visible damage, testing the rear seat heating control module for functionality, and using a diagnostic scanner to communicate with the module.

4. Can I still drive my GMC with the U0210 code indicating a lost communication with the Rear Seat Heating Control Module?

- It is generally safe to drive, but you may experience a lack of rear seat heating functionality and other related issues until the problem is resolved.

5. How can I repair the U0210 code in my GMC related to the Rear Seat Heating Control Module?

- Repair options may include replacing the rear seat heating control module, repairing any damaged wiring or connectors, checking and replacing fuses if necessary, and clearing the trouble code with a diagnostic scanner.

6. Are there any DIY tips for troubleshooting the U0210 code in a GMC myself?

- You can start by visually inspecting the wiring and connectors for any obvious damage, checking the fuses related to the rear seat heating system, and ensuring all connections are secure.

7. Is it necessary to visit a dealership or mechanic to fix the U0210 code in my GMC?

- While you can attempt some basic troubleshooting yourself, for a proper diagnosis and repair, it is recommended to visit a dealership or a qualified mechanic with experience in automotive electronics.

8. Can the U0210 code in a GMC be intermittent or a one-time occurrence?

- Yes, the code can sometimes be triggered by a temporary communication glitch and may not reappear upon subsequent engine starts. However, if the problem persists, it should be addressed.

9. Will fixing the U0210 code in my GMC require reprogramming or reinitializing the Rear Seat Heating Control Module?

- Depending on the repair performed, reprogramming or reinitializing the module may be necessary to ensure proper communication and functionality within the vehicle's network.

10. How can I prevent the U0210 code related to the Rear Seat Heating Control Module from occurring in my GMC in the future?

- Regularly inspect and maintain the rear seat heating system components, avoid water damage to the module, and address any electrical issues promptly to prevent the code from reoccurring.