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Engine-Codes – GMC – B3064 GMC

B3064 GMC Code - Right Front Door Key Unlock Switch Circuit Low

Quick Answer

The B3064 GMC code indicates a problem with the right front door key unlock switch circuit being at a low voltage level. Common causes include Faulty key unlock switch in the right front door, Wiring or electrical connection issues in the key unlock switch circuit, Corrosion or damage to the key unlock switch circuit components. 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
B3064 GMC indicates Right Front Door Key Unlock Switch Circuit Low.
Common causes
Common causes include Faulty key unlock switch in the right front door, Wiring or electrical connection issues in the key unlock switch circuit, Corrosion or damage to the key unlock switch circuit components.
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 B3064 GMC Description

The B3064 GMC code indicates a problem with the right front door key unlock switch circuit being at a low voltage level. This switch is responsible for allowing the driver to unlock the right front door using the key. When this circuit is not functioning properly, it can lead to issues with unlocking the door, potentially causing inconvenience and safety concerns for the driver and passengers.

OBDII Code B3064 GMC - Right Front Door Key Unlock Switch Circuit Low
B3064 GMC Code - Right Front Door Key Unlock Switch Circuit Low

Common Causes of B3064 GMC

  1. Faulty key unlock switch in the right front door.
  2. Wiring or electrical connection issues in the key unlock switch circuit.
  3. Corrosion or damage to the key unlock switch circuit components.
  4. Malfunctioning central locking system module.
  5. Issues with the vehicle's battery or electrical system affecting the key unlock switch circuit.

Symptoms of B3064 GMC

  1. Inability to unlock the right front door using the key.
  2. Central locking system not functioning properly.
  3. Warning light on the dashboard indicating a door lock issue.
  4. Audible clicking or buzzing noise when attempting to unlock the door.
  5. Intermittent issues with unlocking the right front door.

How to Fix B3064 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the trouble code and pinpoint the source of the problem.
  2. Inspect the key unlock switch in the right front door for any visible damage or malfunction. Replace the switch if necessary.
  3. Check the wiring and connections in the key unlock switch circuit for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  4. Test the central locking system module to ensure it is functioning correctly. Replace the module if it is found to be faulty.
  5. Clear the trouble code from the vehicle's computer system after completing the repairs and test the system to ensure the issue has been resolved.

Cost to Fix B3064 GMC

The typical repair costs for addressing a B3064 GMC code related to the right front door key unlock switch circuit low can vary depending on the specific cause of the issue. In general, the cost of parts such as a new key unlock switch or central locking system 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 repairs, including parts and labor, could range from $150 to $500 or more. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the 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 B3064 GMC Code

1. What are the common symptoms of OBDII code B3064 GMC?

The common symptoms of code B3064 GMC include issues with the right front door key unlock switch, such as the switch not functioning properly or the door not unlocking when using the key.

2. What causes the OBDII code B3064 GMC to trigger?

The B3064 code is triggered when the Body Control Module (BCM) detects a low voltage or resistance in the right front door key unlock switch circuit.

3. How can I diagnose the cause of OBDII code B3064 GMC?

Diagnosing code B3064 involves checking the wiring and connections associated with the right front door key unlock switch, testing the switch itself, and inspecting the BCM for any faults.

4. Can a faulty key fob cause OBDII code B3064 GMC to appear?

Yes, a faulty key fob can potentially cause code B3064 to appear if it is sending incorrect signals to the BCM, affecting the right front door key unlock switch circuit.

5. What are some repair tips for fixing OBDII code B3064 GMC?

Repairing code B3064 may involve repairing or replacing damaged wiring, repairing or replacing the right front door key unlock switch, or reprogramming the BCM if necessary.

6. Is it safe to continue driving with OBDII code B3064 GMC present?

While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to ensure proper functioning of the right front door key unlock switch.

7. Can weather conditions affect the right front door key unlock switch circuit and trigger OBDII code B3064 GMC?

Yes, extreme weather conditions or water ingress can potentially damage the wiring or switch, leading to a low voltage or resistance condition that triggers the B3064 code.

8. How much does it typically cost to repair OBDII code B3064 GMC?

The cost of repairing B3064 can vary depending on the underlying cause, but it may involve a few hundred dollars for parts and labor if professional assistance is required.

9. Can I reset OBDII code B3064 GMC myself after making repairs?

Yes, once the underlying issue causing the B3064 code is fixed, you can reset the code using an OBDII scanner or by disconnecting the battery for a few minutes to clear the BCM's memory.

10. Will OBDII code B3064 GMC cause my vehicle to fail an emissions test?

While the B3064 code is related to a door lock switch circuit and may not directly affect emissions, it is still advisable to address and resolve the issue to ensure the overall health and functionality of your vehicle.

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