AutoCodes – GMC – U0437 GMC

U0437 GMC Code - Invalid Data Received From Differential Control Module Rear

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Differential Control Module Rear, Differential Control Module Rear harness is open or shorted, Differential Control Module Rear 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: U0437 GMC indicates Invalid Data Received From Differential Control Module Rear.
Common causes: Common causes include Faulty Differential Control Module Rear, Differential Control Module Rear harness is open or shorted, Differential Control Module Rear 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 594

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0437 GMC Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Differential Control Module Rear causing its integrity to be questioned.

OBDII Code U0437 GMC - Invalid Data Received From Differential Control Module Rear - AutoCodes.com — U0437 GMC Code - Invalid Data Received From Differential Control Module Rear

What does this mean?

What are the Possible Causes of the DTC U0437 GMC?

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

How to Fix the DTC U0437 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 U0437 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.

Need more information about the U0437 GMC code?

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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 U0437 GMC Code

1. What are common symptoms of OBDII code U0437 in a GMC vehicle?

- Common symptoms include issues with the vehicle's traction control system, ABS system, and potentially the stability control system.

2. What can cause the OBDII code U0437 in a GMC, indicating "Invalid Data Received From Differential Control Module Rear"?

- This code can be caused by a faulty differential control module, damaged wiring or connectors, or a software communication error.

3. How can I diagnose the OBDII code U0437 in my GMC vehicle?

- Diagnosing this code typically involves using a professional diagnostic scanner to retrieve specific trouble codes and data related to the differential control module.

4. Can I still drive my GMC with the U0437 code present?

- It is not recommended to drive the vehicle with this code present, as it may affect the vehicle's stability control and traction control systems.

5. How can I repair the OBDII code U0437 in my GMC?

- Repairing this code may involve checking and repairing any damaged wiring or connectors, replacing the differential control module if necessary, and clearing the code with a diagnostic tool.

6. Is it safe to reset the U0437 code in a GMC myself?

- While you can attempt to clear the code using a diagnostic tool, it is recommended to address the underlying issue causing the code to prevent potential safety risks.

7. Can extreme weather conditions trigger the U0437 code in a GMC?

- Extreme weather conditions can sometimes lead to electrical issues that may trigger the U0437 code, but it is more commonly caused by component failures or communication errors.

8. Will the U0437 code in a GMC cause the vehicle to fail an emissions test?

- Yes, the U0437 code can cause the vehicle to fail an emissions test due to the malfunction in the differential control module affecting the vehicle's emissions control system.

9. How much does it typically cost to repair the U0437 code in a GMC?

- The cost of repairing the U0437 code can vary depending on the underlying cause, but it may range from a few hundred dollars for wiring repairs to over a thousand dollars for module replacement.

10. Can a regular mechanic fix the U0437 code in a GMC, or is it best handled by a dealership?

- A regular mechanic with experience in diagnosing and repairing electrical issues in vehicles should be able to address the U0437 code, but a dealership may have specialized knowledge for GMC vehicles.