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Engine-Codes – GMC – B319A 2017 GMC Sierra

B319A 2017 GMC Sierra Code - Right Rear Window Switch

Quick Answer

The B319A diagnostic trouble code (DTC) for the 2017 GMC Sierra specifically refers to a fault in the right rear window switch. Common causes include Faulty right rear window switch, Wiring or electrical connection issues, Blown fuse related to the window circuit. 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
B319A 2017 GMC Sierra indicates Right Rear Window Switch.
Common causes
Common causes include Faulty right rear window switch, Wiring or electrical connection issues, Blown fuse related to the window circuit.
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 11, 2024
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Code B319A 2017 GMC Sierra Description

The B319A diagnostic trouble code (DTC) for the 2017 GMC Sierra specifically refers to a fault in the right rear window switch. This code indicates that there is a malfunction in the electrical circuitry or communication system of the right rear window switch. The switch is responsible for controlling the movement of the right rear window, allowing it to go up or down.

OBDII Code B319A 2017 GMC Sierra - Right Rear Window Switch
B319A 2017 GMC Sierra Code - Right Rear Window Switch

Common Causes of B319A 2017 GMC Sierra

  1. Faulty right rear window switch
  2. Wiring or electrical connection issues
  3. Blown fuse related to the window circuit
  4. Defective window motor
  5. Water damage or corrosion in the switch assembly

Symptoms of B319A 2017 GMC Sierra

  1. Right rear window fails to respond to switch activation
  2. Window moves intermittently or erratically
  3. Unusual noises when operating the window switch
  4. Window gets stuck in open or closed position

How to Fix B319A 2017 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue, such as testing the switch for proper functionality and checking the electrical connections.
  2. If the switch is faulty, replace it with a new one that is compatible with the vehicle's make and model.
  3. Inspect the wiring and connections for any damage or corrosion, repairing or replacing as necessary.
  4. Test the window motor to ensure it is functioning correctly and replace it if needed.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scanner to reset the error code.

Cost to Fix B319A 2017 GMC Sierra

The cost of repairing the right rear window switch on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, the cost of replacing a window switch can range from $100 to $200, with additional costs for any necessary repairs to wiring or electrical connections. Labor rates at auto repair shops typically range from $80 to $150 per hour, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle.

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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 B319A 2017 GMC Sierra Code

1. What does the OBDII code B319A mean on a 2017 GMC Sierra?

The code B319A indicates a fault with the right rear window switch circuit, such as a malfunction or communication issue.

2. What are the common symptoms of the B319A code?

Symptoms include the right rear window not responding to switch commands, intermittent operation, or no operation at all.

3. What causes the B319A code to appear?

Common causes include a faulty right rear window switch, damaged wiring or connectors, or a problem with the Body Control Module (BCM).

4. How can I diagnose the B319A code?

Start by inspecting the right rear window switch and its wiring for damage or loose connections. Use a scan tool to check for related codes and confirm the issue.

5. Can a faulty right rear window motor trigger the B319A code?

While the code specifically relates to the switch, a faulty motor could indirectly cause issues if it creates additional electrical stress or feedback.

6. Is it safe to drive with the B319A code?

Yes, it's generally safe to drive, but the right rear window may not function properly until the issue is resolved.

7. How do I fix the B319A code on my 2017 GMC Sierra?

Repair options include replacing the right rear window switch, repairing damaged wiring, or reprogramming the BCM if necessary.

8. Can clearing the code fix the issue permanently?

No, clearing the code only resets the warning. The underlying issue must be diagnosed and repaired to prevent the code from returning.

9. How much does it cost to repair the B319A code?

Repair costs vary based on the issue but typically range from $50 to $250, depending on whether the switch, wiring, or BCM needs repair or replacement.

10. Can I replace the right rear window switch myself?

Yes, if you're comfortable working with car interiors and electrical components, you can replace the switch yourself with basic tools.

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