AutoCodes – GMC – B3823 GMC

B3823 GMC Code - Right Rear Window Down Control Circuit

Quick Answer

The Body Control Module (BCM) grounds the control side of the right rear power window down relay upon receiving a class 2 message from the Driver Door Module (DDM). Common causes include Faulty Right Rear Power Window Switch, Right Rear Power Window Switch harness is open or shorted, Right Rear Power Window Switch 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: B3823 GMC indicates Right Rear Window Down Control Circuit.
Common causes: Common causes include Faulty Right Rear Power Window Switch, Right Rear Power Window Switch harness is open or shorted, Right Rear Power Window Switch 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 592

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 Mar 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3823 GMC Description

The Body Control Module (BCM) grounds the control side of the right rear power window down relay upon receiving a class 2 message from the Driver Door Module (DDM). The Diagnostic Trouble Code (DTC) sets when the BCM has grounded the right rear power window down relay control circuit and the control circuit is shorted to battery positive voltage.

OBDII Code B3823 GMC - Right Rear Window Down Control Circuit - AutoCodes.com — B3823 GMC Code - Right Rear Window Down Control Circuit

What does this mean?

What are the Possible Causes of the DTC B3823 GMC?

Faulty Right Rear Power Window Switch
Right Rear Power Window Switch harness is open or shorted
Right Rear Power Window Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3823 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 B3823 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 B3823 GMC Code

1. What are the common symptoms of OBDII code B3823 GMC (Right Rear Window Down Control Circuit)?

The common symptoms include the right rear window being unable to go down, or the window may move intermittently or erratically.

2. What are the possible causes of OBDII code B3823 GMC?

Potential causes of this code include a faulty right rear window switch, damaged wiring in the control circuit, a defective window motor, or a malfunctioning body control module.

3. How can I diagnose the issue related to OBDII code B3823 GMC?

To diagnose the problem, you can perform a visual inspection of the wiring and connectors, test the right rear window switch for proper functionality, check the window motor for power and ground, and use a scan tool to monitor the signals to the body control module.

4. What are some repair tips for resolving OBDII code B3823 GMC?

Repair tips include checking and repairing any damaged wiring or connectors, replacing the right rear window switch if faulty, testing and replacing the window motor if necessary, and reprogramming the body control module if indicated.

5. Can I drive my vehicle with OBDII code B3823 GMC active?

It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to ensure proper functioning of the right rear window and related components.

6. How much does it typically cost to repair OBDII code B3823 GMC?

The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. It is advisable to consult a professional mechanic for an accurate estimate.

7. Is OBDII code B3823 GMC a common issue in GMC vehicles?

While this code may not be as common as some other OBDII codes, issues with power window controls can occur in GMC vehicles, especially in older models or vehicles with high mileage.

8. Can a DIY enthusiast fix OBDII code B3823 GMC at home?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code at home. However, it is recommended to have a professional mechanic perform the repair if you are unsure.

9. Will resetting the OBDII code B3823 GMC make the issue go away?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code. It is important to diagnose and repair the issue to prevent it from recurring.

10. How long does it take to repair OBDII code B3823 GMC?

The repair time can vary depending on the exact cause of the code and the complexity of the repair needed. Simple fixes like replacing a switch may take less time, while more involved repairs could take several hours.