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B3517 Chevrolet Code - Left Rear Window Express Down Circuit Low

Quick Answer

The B3517 diagnostic trouble code for Chevrolet vehicles refers to the "Left Rear Window Express Down Circuit Low." This code indicates that there is an issue with the left rear window's express down feature, which allows the window to quickly open or close with a single press of the button. Common causes include Faulty window switch or control module, Damaged wiring harness or loose connections in the circuit, Malfunctioning window motor. 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
B3517 Chevrolet indicates Left Rear Window Express Down Circuit Low.
Common causes
Common causes include Faulty window switch or control module, Damaged wiring harness or loose connections in the circuit, Malfunctioning window motor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B3517 Chevrolet Description

The B3517 diagnostic trouble code for Chevrolet vehicles refers to the "Left Rear Window Express Down Circuit Low." This code indicates that there is an issue with the left rear window's express down feature, which allows the window to quickly open or close with a single press of the button. When this code is triggered, it means that the circuit responsible for the express down function is experiencing a low voltage condition. This can lead to the window not operating as intended or not responding at all when the express down feature is activated.

OBDII Code B3517 Chevrolet - Left Rear Window Express Down Circuit Low
B3517 Chevrolet Code - Left Rear Window Express Down Circuit Low

Common Causes of B3517 Chevrolet

  1. Faulty window switch or control module.
  2. Damaged wiring harness or loose connections in the circuit.
  3. Malfunctioning window motor.
  4. Corrosion or oxidation in the electrical contacts.
  5. Issues with the vehicle's battery or electrical system affecting the voltage supply to the circuit.

Symptoms of B3517 Chevrolet

  1. Left rear window fails to respond to the express down feature.
  2. Slow or erratic movement of the left rear window when using the express down function.
  3. Inability to fully open or close the left rear window with a single press of the button.
  4. Intermittent operation of the left rear window express down feature.

How to Fix B3517 Chevrolet

  1. Begin by performing a visual inspection of the wiring harness and electrical connections to check for any signs of damage or corrosion. Repair or replace any faulty wiring as needed.
  2. Use a multimeter to test the voltage in the left rear window express down circuit and identify any low voltage readings. This can help pinpoint the source of the issue, whether it's the window switch, control module, or window motor.
  3. Test the functionality of the window switch and control module to determine if they are sending the correct signals to the window motor. Replace any components that are found to be faulty.
  4. If the window motor is determined to be the cause of the problem, remove and replace it with a new unit to restore the proper operation of the left rear window.
  5. After completing the repairs, test the left rear window express down feature to ensure that it is functioning correctly. Make any necessary adjustments or fine-tuning to achieve optimal performance.

Cost to Fix B3517 Chevrolet

The typical repair costs for addressing the B3517 Chevrolet diagnostic trouble code can vary depending on the specific cause of the issue and the parts or components that need to be replaced. On average, the repair for this problem may range from $150 to $400, including parts and labor. It's important to note that the actual costs can differ based on factors such as the location of the repair shop, the vehicle's make and model, and the technician's labor rates. Customers are advised to consult with local auto repair shops to obtain accurate estimates for diagnosing and fixing this issue.

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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 B3517 Chevrolet Code

1. What does the OBDII code B3517 mean for a Chevrolet?

B3517 indicates a problem with the left rear window express-down circuit, specifically a low voltage condition.

2. What are the common symptoms of code B3517 in a Chevrolet?

Symptoms include the left rear window not rolling down automatically when using the express-down feature and potentially no response from the window switch.

3. What causes the B3517 code to appear?

Common causes include a faulty window switch, damaged wiring or connectors in the circuit, or a malfunctioning window motor.

4. Can a blown fuse cause the B3517 code?

Yes, a blown fuse related to the power windows can cause this code by interrupting the circuit.

5. How can I diagnose the B3517 code on my Chevrolet?

Start by inspecting the wiring, connectors, and fuses for visible damage, then test the window switch and motor with a multimeter for proper function.

6. Is the B3517 code a serious issue?

While it doesn't affect drivability, it may impact convenience and safety if the window cannot be used properly.

7. Can I fix the B3517 code myself?

If you're comfortable with basic electrical testing and repairs, you may be able to fix it by replacing a faulty switch, motor, or repairing damaged wiring.

8. How much does it cost to repair the B3517 code?

Repair costs vary but can range from $50 to $300 depending on whether the issue is with the switch, motor, or wiring.

9. Can a software issue cause the B3517 code?

While rare, a software issue in the body control module (BCM) could potentially cause this code and may require a reflash or update.

10. Will clearing the B3517 code fix the problem?

Clearing the code may temporarily remove it, but the underlying issue will cause it to return until properly repaired.

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