AutoCodes – Chevrolet – B3477 Chevrolet

B3477 Chevrolet Code - Left Rear Window Express Up or Down Circuit Low

Quick Answer

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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: B3477 Chevrolet indicates Left Rear Window Express Up or Down Circuit Low.
Common causes: Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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 454

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3477 Chevrolet Description

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). There are no external circuits. The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate Driver Door Module (DDM), Passenger Front Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM), via the class 2 serial data circuit. The door module, upon receiving the message, examines other relevant information available on the class 2 serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window. If the DDSA determines that one of its built in window switches is closed for more than 15 continuous seconds, it sets the DTC.

OBDII Code B3477 Chevrolet - Left Rear Window Express Up or Down Circuit Low - AutoCodes.com — B3477 Chevrolet Code - Left Rear Window Express Up or Down Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3477 Chevrolet?

Faulty Driver Door Switch Assembly (DDSA)
Driver Door Switch Assembly (DDSA) harness is open or shorted
Driver Door Switch Assembly (DDSA) circuit poor electrical connection
Faulty Left Rear Door Module (LRDM)
Faulty Driver Door Module (DDM)

How to Fix the DTC B3477 Chevrolet?

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 B3477 Chevrolet 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 B3477 Chevrolet Code

1. What are the common symptoms of OBDII code B3477 in a Chevrolet related to the left rear window express up or down circuit being low?

The common symptoms include the left rear window being unable to operate using the express up or down feature, slow or erratic movement of the window, or complete failure to move.

2. What are some possible causes of OBDII code B3477 in a Chevrolet indicating a low left rear window express circuit?

Possible causes include a faulty left rear window switch, damaged wiring or connectors in the left rear window circuit, a malfunctioning window motor, or a problem with the Body Control Module (BCM).

3. How can I diagnose the issue related to OBDII code B3477 in a Chevrolet for the left rear window express circuit being low?

To diagnose the problem, you can use a scan tool to check for the specific fault code B3477, visually inspect the wiring and connectors in the left rear window circuit, test the left rear window switch, and perform a functionality test on the window motor.

4. What are some repair tips for resolving OBDII code B3477 in a Chevrolet indicating a low left rear window express circuit?

Repair tips may include repairing or replacing damaged wiring or connectors, replacing the left rear window switch if faulty, testing and replacing the window motor if necessary, and reprogramming the BCM if needed.

5. Can I fix OBDII code B3477 related to the left rear window express circuit being low in a Chevrolet on my own?

Depending on your level of automotive repair experience, you may be able to address the issue yourself by following diagnostic procedures and repair tips. However, if you are unsure or uncomfortable with electrical systems, it is recommended to seek professional assistance.

6. Is it safe to continue driving with OBDII code B3477 in a Chevrolet indicating a low left rear window express circuit?

It is generally safe to continue driving, but you may experience inconvenience due to the left rear window not operating properly. It is advisable to address the issue promptly to avoid further complications.

7. Will fixing OBDII code B3477 in a Chevrolet related to the left rear window express circuit being low affect the overall vehicle performance?

Fixing the issue should not significantly impact the overall performance of the vehicle. However, it will restore the proper function of the left rear window and ensure the convenience and safety of the vehicle's occupants.

8. How much does it typically cost to repair OBDII code B3477 for the left rear window express circuit being low in a Chevrolet?

The cost of repair can vary depending on the exact cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take the vehicle to a professional mechanic. Costs may range from a few dollars for minor repairs to a few hundred dollars for more complex issues.

9. Are there any preventive maintenance steps I can take to avoid encountering OBDII code B3477 in a Chevrolet related to the left rear window express circuit in the future?

Regularly inspecting the window switches, wiring, and connectors for signs of wear or damage, operating the windows with care to avoid stressing the motor, and promptly addressing any window-related issues can help prevent the occurrence of code B3477 in the future.