AutoCodes – GMC – U0232 GMC

U0232 GMC Code - Lost Communication With Left Side Object Detection 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 Left Side Object Detection Control Module, Left Side Object Detection Control Module harness is open or shorted, Left Side Object Detection 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: U0232 GMC indicates Lost Communication With Left Side Object Detection Control Module.
Common causes: Common causes include Faulty Left Side Object Detection Control Module, Left Side Object Detection Control Module harness is open or shorted, Left Side Object Detection 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 4,217

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 U0232 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 Left Side Object Detection Control Module has not been received.

OBDII Code U0232 GMC - Lost Communication With Left Side Object Detection Control Module - AutoCodes.com — U0232 GMC Code - Lost Communication With Left Side Object Detection Control Module

What does this mean?

What are the Possible Causes of the DTC U0232 GMC?

Faulty Left Side Object Detection Control Module
Left Side Object Detection Control Module harness is open or shorted
Left Side Object Detection Control Module circuit poor electrical connection

How to Fix the DTC U0232 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 U0232 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 U0232 GMC Code

1. What are common symptoms of OBDII code U0232 GMC?

Common symptoms include malfunctioning left side object detection system, warning lights on the dashboard, and loss of communication with the control module.

2. What causes the OBDII code U0232 GMC to trigger?

The code is triggered when the vehicle's onboard diagnostic system detects a communication failure with the left side object detection control module.

3. How can I diagnose the issue related to code U0232 GMC?

Diagnosis typically involves checking the wiring connections, fuses, and the control module itself for any signs of damage or malfunction.

4. Can a DIY enthusiast repair the U0232 GMC code?

Repairing this code may require advanced diagnostic tools and knowledge. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Is it safe to drive with the U0232 GMC code triggered?

It is not recommended to drive with this code triggered, as it may affect the proper functioning of the left side object detection system, compromising safety.

6. How much does it cost to repair the U0232 GMC code?

The cost of repair can vary depending on the extent of the issue and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics.

7. Can a faulty sensor cause the U0232 GMC trouble code?

Yes, a faulty sensor within the left side object detection system can potentially cause the communication failure and trigger the U0232 code.

8. Are there any recalls related to the U0232 GMC code?

Recalls related to this specific code can vary by vehicle model and year. It is recommended to check with the manufacturer or a dealership for any relevant recalls.

9. Will resetting the trouble code fix the issue temporarily?

Resetting the trouble code may temporarily clear the warning lights, but it will not fix the underlying problem causing the communication failure with the control module.

10. How can I prevent the U0232 GMC code from reoccurring?

Regular maintenance checks, timely repairs of electrical components, and proper handling of the vehicle can help prevent the U0232 code from reoccurring.