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B318A 2017 Chevrolet Silverado Code - Left Rear Window Switch

Quick Answer

The B318A diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado specifically refers to an issue with the left rear window switch. Common causes include Faulty left rear window switch, Damaged or corroded wiring connections, Defective 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
B318A 2017 Chevrolet Silverado indicates Left Rear Window Switch.
Common causes
Common causes include Faulty left rear window switch, Damaged or corroded wiring connections, Defective 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 14, 2024
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Code B318A 2017 Chevrolet Silverado Description

The B318A diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado specifically refers to an issue with the left rear window switch. This code indicates that there is a malfunction or fault detected in the circuit related to the left rear window switch. The left rear window switch is a component that allows the driver or passengers to control the operation of the left rear window. When this switch is not functioning properly, it can lead to various issues with the window operation.

OBDII Code B318A 2017 Chevrolet Silverado - Left Rear Window Switch
B318A 2017 Chevrolet Silverado Code - Left Rear Window Switch

Common Causes of B318A 2017 Chevrolet Silverado

  1. Faulty left rear window switch.
  2. Damaged or corroded wiring connections.
  3. Defective left rear window motor.
  4. Malfunctioning control module.
  5. Water or moisture damage to the switch or wiring.

Symptoms of B318A 2017 Chevrolet Silverado

  1. Left rear window is unresponsive to switch commands.
  2. Left rear window operates intermittently or erratically.
  3. Left rear window gets stuck in a partially open or closed position.
  4. Illumination of the left rear window switch may be dim or flickering.
  5. The left rear window switch may feel loose or unresponsive when pressed.

How to Fix B318A 2017 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the issue by testing the left rear window switch, wiring, motor, and control module.
  2. Replace the faulty left rear window switch if it is determined to be the cause of the problem.
  3. Repair or replace any damaged or corroded wiring connections.
  4. Replace the left rear window motor if it is found to be defective.
  5. If the control module is malfunctioning, replace it with a new one.

Cost to Fix B318A 2017 Chevrolet Silverado

The typical repair costs for addressing a B318A code related to the left rear window switch on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. Generally, the cost of parts such as a new window switch, wiring components, motor, or control module can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of repair can therefore range from $150 to $500 or more, depending on the extent of the issue and the specific components that need to be replaced. It is advisable to consult with a professional mechanic for a more accurate estimate based on the vehicle's condition and location.

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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 B318A 2017 Chevrolet Silverado Code

1. What does OBDII code B318A on a 2017 Chevrolet Silverado indicate?

The B318A code specifically relates to an issue with the left rear window switch in the vehicle.

2. What are the common symptoms of OBDII code B318A in a 2017 Chevrolet Silverado?

Common symptoms include the left rear window not responding to the switch commands or displaying erratic behavior.

3. What are the possible causes of OBDII code B318A in a 2017 Chevrolet Silverado?

Potential causes may include a faulty left rear window switch, wiring issues, or a problem with the window motor or regulator.

4. How can I diagnose the OBDII code B318A in my 2017 Chevrolet Silverado?

Diagnosis involves inspecting the left rear window switch, checking for any visible wiring damage, and testing the window motor and regulator for proper functionality.

5. Can I repair OBDII code B318A in my 2017 Chevrolet Silverado myself?

If you are familiar with automotive electrical systems, you may be able to replace the left rear window switch or address any wiring issues yourself. Otherwise, it is recommended to seek professional help.

6. Is it safe to continue driving my 2017 Chevrolet Silverado with OBDII code B318A?

It is generally not recommended to drive with this issue as it may lead to further electrical problems or safety concerns related to the left rear window.

7. How much does it cost to repair OBDII code B318A in a 2017 Chevrolet Silverado?

The cost of repair can vary depending on the exact cause of the issue, but it may involve the cost of a new switch, labor for installation, and any additional parts or repairs needed.

8. Can OBDII code B318A in a 2017 Chevrolet Silverado cause other electrical problems in the vehicle?

While the code specifically relates to the left rear window switch, electrical issues in one part of the vehicle can sometimes affect other systems, so it's essential to address the problem promptly.

9. Are there any recalls or technical service bulletins related to OBDII code B318A in a 2017 Chevrolet Silverado?

Check with your local Chevrolet dealership or visit the manufacturer's website to see if there are any recalls or bulletins related to this specific OBDII code in your vehicle.

10. What steps can I take to prevent OBDII code B318A from occurring again in my 2017 Chevrolet Silverado?

Regularly maintaining and inspecting your vehicle's electrical components, such as the window switches and wiring, can help prevent issues like B318A from happening again.

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