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Engine-Codes – GMC – B3172 GMC

B3172 GMC Code - Right Front Window Up Switch Circuit Low

Quick Answer

The B3172 GMC diagnostic trouble code (DTC) specifically refers to a fault in the right front window up switch circuit being detected as low. Common causes include Faulty right front window switch, Damaged or corroded wiring in the switch circuit, Blown fuse related to the right front window. 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
B3172 GMC indicates Right Front Window Up Switch Circuit Low.
Common causes
Common causes include Faulty right front window switch, Damaged or corroded wiring in the switch circuit, Blown fuse related to the right front window.
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 16, 2024
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Code B3172 GMC Description

The B3172 GMC diagnostic trouble code (DTC) specifically refers to a fault in the right front window up switch circuit being detected as low. In simpler terms, this code indicates that there is an issue with the electrical circuit responsible for controlling the right front window going up. This problem can affect the vehicle's overall functionality and convenience, as the right front window may not operate as intended.

OBDII Code B3172 GMC - Right Front Window Up Switch Circuit Low
B3172 GMC Code - Right Front Window Up Switch Circuit Low

Common Causes of B3172 GMC

  1. Faulty right front window switch.
  2. Damaged or corroded wiring in the switch circuit.
  3. Blown fuse related to the right front window.
  4. Malfunctioning right front window motor.
  5. Poor electrical connection in the circuit.

Symptoms of B3172 GMC

  1. Inability to raise the right front window using the switch.
  2. Unresponsive or intermittent operation of the right front window.
  3. Strange noises coming from the right front window when attempting to raise it.
  4. The right front window gets stuck in a partially open position.
  5. The right front window moves slowly or struggles to go up.

How to Fix B3172 GMC

  1. Begin by inspecting the right front window switch for any visible damage or signs of wear. Replace the switch if necessary.
  2. Check the wiring in the switch circuit for any breaks, corrosion, or loose connections. Repair or replace any damaged wiring.
  3. Verify the condition of the fuse related to the right front window and replace it if blown.
  4. Test the right front window motor for proper functionality. Replace the motor if it is found to be faulty.
  5. Once the necessary repairs have been made, clear the DTC and test the right front window to ensure it operates correctly.

Cost to Fix B3172 GMC

The typical repair costs for addressing a B3172 GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a window switch can cost between $50 and $150, while repairing wiring or replacing a window motor can range from $100 to $300 or more. Labor costs can add an additional $80 to $150 per hour, with the total repair bill potentially amounting to a few hundred dollars. It's recommended to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the unique circumstances of the vehicle in question.

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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 B3172 GMC Code

1. What are the common symptoms of OBDII code B3172 GMC (Right Front Window Up Switch Circuit Low)?

Symptoms may include the right front window being inoperative or not responding to the up switch command.

2. What are the possible causes of OBDII code B3172 GMC?

Potential causes include a faulty right front window switch, damaged wiring or connectors in the circuit, or a malfunctioning window control module.

3. How can I diagnose the issue related to OBDII code B3172 GMC?

You can use a multimeter to test the continuity of the wiring, inspect the window switch for any visible damage, and perform a scan tool test to check the window control module.

4. Can a DIY enthusiast repair OBDII code B3172 GMC?

Depending on your skill level, you may be able to repair this issue by replacing the faulty window switch, repairing damaged wiring, or replacing the window control module.

5. Is it safe to continue driving with OBDII code B3172 GMC active?

While the vehicle may still be operable, it is recommended to address the issue promptly to avoid potential safety concerns and further damage to the electrical system.

6. Are there any common mistakes to avoid when dealing with OBDII code B3172 GMC?

Avoid overlooking loose connections, assuming the issue is always with the switch, and neglecting to inspect the entire circuit for potential faults.

7. How much does it typically cost to repair OBDII code B3172 GMC at a repair shop?

The cost can vary depending on the specific cause of the issue, but replacing a faulty switch or repairing wiring may range from $100 to $300, while replacing a control module can cost more.

8. Can extreme weather conditions affect the occurrence of OBDII code B3172 GMC?

Yes, extreme temperatures or moisture can potentially worsen electrical issues leading to this OBDII code, so it's essential to keep the vehicle protected and maintained properly.

9. Will resetting the OBDII system clear the B3172 GMC code?

Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return after driving or using the affected window switch.

10. Is professional help necessary to repair OBDII code B3172 GMC?

While DIY repairs are possible for some individuals, seeking professional help from a certified mechanic or auto electrician is recommended for accurate diagnosis and proper repair of this OBDII code.

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