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Engine-Codes – GMC – B3517 GMC

B3517 GMC Code - Left Rear Window Express Down Circuit Low

Quick Answer

The B3517 GMC diagnostic trouble code (DTC) specifically refers to the left rear window express down circuit being low. Common causes include Damaged wiring harness leading to the left rear window, Faulty express down switch on the driver's side control panel, Malfunctioning left rear 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 GMC indicates Left Rear Window Express Down Circuit Low.
Common causes
Common causes include Damaged wiring harness leading to the left rear window, Faulty express down switch on the driver's side control panel, Malfunctioning left rear 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 17, 2024
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Code B3517 GMC Description

The B3517 GMC diagnostic trouble code (DTC) specifically refers to the left rear window express down circuit being low. In simpler terms, this code indicates that there is a problem with the mechanism that allows the left rear window to automatically roll down with a single touch of the button. This issue can impact the convenience and functionality of the vehicle, as the express down feature is designed to provide quick and easy access to opening the window.

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

Common Causes of B3517 GMC

  1. Damaged wiring harness leading to the left rear window.
  2. Faulty express down switch on the driver's side control panel.
  3. Malfunctioning left rear window motor.
  4. Issue with the control module responsible for the express down function.
  5. Poor electrical connection or corrosion in the circuit.

Symptoms of B3517 GMC

  1. Left rear window fails to roll down with a single touch of the button.
  2. Unusual noises coming from the left rear window when attempting to use the express down feature.
  3. Left rear window moves slowly or intermittently when using the express down function.
  4. Left rear window gets stuck in a partially open position and cannot be fully closed using the express down feature.

How to Fix B3517 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the trouble code and pinpoint the faulty component.
  2. Inspect the wiring harness leading to the left rear window for any visible damage or breaks. Repair or replace any damaged wiring as needed.
  3. Test the express down switch on the driver's side control panel to determine if it is functioning properly. Replace the switch if it is found to be faulty.
  4. Check the left rear window motor for proper operation. If the motor is malfunctioning, replace it with a new one.
  5. If the issue persists, inspect the control module for the express down function and replace it if necessary.

Cost to Fix B3517 GMC

The typical repair costs for addressing the B3517 GMC code can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this type of problem could range from $150 to $400, including parts and labor. It's important to note that the actual cost may differ based on the location of the repair shop, the make and model of the vehicle, and the expertise of the technician. It is recommended to obtain quotes from multiple auto repair shops to compare prices and ensure a competitive rate.

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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 GMC Code

1. What are the common symptoms of OBDII code B3517 GMC?

The common symptoms of code B3517 GMC include the left rear window failing to operate using the express down feature or operating slower than usual.

2. What are the possible causes of OBDII code B3517 GMC?

Possible causes of code B3517 GMC include a faulty left rear window switch, damaged wiring or connectors in the left rear window circuit, or a malfunctioning left rear window motor.

3. How can I diagnose the issue related to OBDII code B3517 GMC?

To diagnose the issue related to code B3517 GMC, you can start by checking the left rear window switch for proper operation, inspecting the wiring and connectors for any damage, and testing the left rear window motor for functionality.

4. What are some repair tips for resolving OBDII code B3517 GMC?

Repair tips for resolving code B3517 GMC include repairing or replacing the left rear window switch if faulty, repairing damaged wiring or connectors in the circuit, and replacing the left rear window motor if necessary.

5. Can I reset OBDII code B3517 GMC once the issue is fixed?

Yes, once the underlying issue related to code B3517 GMC is resolved, you can reset the code using an OBDII scanner to clear it from the vehicle's memory.

6. Are there any safety concerns associated with OBDII code B3517 GMC?

While code B3517 GMC is related to the left rear window circuit, there are no immediate safety concerns associated with this code. However, it is important to address the issue promptly to ensure proper functionality of the window.

7. How does OBDII code B3517 GMC affect the vehicle's overall performance?

OBDII code B3517 GMC specifically affects the operation of the left rear window express down feature and does not impact the overall performance of the vehicle in terms of driving or engine function.

8. Is it possible to drive the vehicle with OBDII code B3517 GMC present?

Yes, it is typically safe to drive the vehicle with OBDII code B3517 GMC present, as long as the issue does not interfere with the normal operation of the vehicle or compromise safety.

9. How common is OBDII code B3517 GMC in GMC vehicles?

OBDII code B3517 GMC related to the left rear window express down circuit low is a relatively common issue in GMC vehicles, particularly in models with power windows and express down features.

10. Can I fix OBDII code B3517 GMC myself, or do I need professional help?

Depending on your automotive repair skills and experience, you may be able to diagnose and fix OBDII code B3517 GMC yourself by following repair guides and utilizing the necessary tools. However, if you are unsure or uncomfortable with the repair process, it is recommended to seek professional help from a certified mechanic or technician.

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