AutoCodes – GMC – B3064 GMC

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

Quick Answer

The Door Lock Cylinder Switches provide a direct ground input to the Body Control Module (BCM) when one of the switches is activated. Common causes include Faulty Right Door Lock Cylinder Switch, Right Door Lock Cylinder Switch harness is open or shorted, Right Door Lock Cylinder Switch circuit poor electrical connection. 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 Right Door Lock Cylinder Switch, Right Door Lock Cylinder Switch harness is open or shorted, Right Door Lock Cylinder Switch circuit poor electrical connection.
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.
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Code Popularity 499
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 03, 2020
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Code B3064 GMC Description

The Door Lock Cylinder Switches provide a direct ground input to the Body Control Module (BCM) when one of the switches is activated. This input allows the BCM to detect when the Door Lock Cylinder Switches are turned to the unlock position. When the BCM detects that a Door Lock Cylinder Switch is in the unlock position for greater than one second, it will perform an output command to unlock all the doors. This input is also needed for the optional content theft deterrent system when the keyless entry feature does not unlock the doors. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground in the driver door key switch signal circuit for greater than 60 seconds.
OBDII Code B3064 GMC - Right Front Door Key Unlock Switch Circuit Low - AutoCodes.com
B3064 GMC Code - Right Front Door Key Unlock Switch Circuit Low

What are the Possible Causes of the DTC B3064 GMC?

  • Faulty Right Door Lock Cylinder Switch
  • Right Door Lock Cylinder Switch harness is open or shorted
  • Right Door Lock Cylinder Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3064 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3064 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B3064 GMC code?

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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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