Engine-CodesGMC – B3133 GMC

B3133 GMC Code - All Door Unlock Circuit High

Quick Answer

The B3133 GMC code indicates that there is a high voltage condition in the all door unlock circuit. Common causes include Faulty door lock actuator, Wiring issues such as shorts or open circuits, Faulty central locking control module. 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
B3133 GMC indicates All Door Unlock Circuit High.
Common causes
Common causes include Faulty door lock actuator, Wiring issues such as shorts or open circuits, Faulty central locking control module.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B3133 GMC Description

The B3133 GMC code indicates that there is a high voltage condition in the all door unlock circuit. This means that the signal that commands all the doors to unlock simultaneously is not within the expected range, which can lead to issues with the vehicle's locking and unlocking system. This code can affect the convenience and security of the vehicle, as it may prevent all doors from unlocking properly when the key fob or door switch is activated. If not addressed, this issue can lead to inconvenience for the driver and passengers, as well as potential safety concerns if the doors do not unlock in emergency situations. The underlying cause of this issue could be related to a faulty door lock actuator, wiring issues, or a problem with the central locking control module.

OBDII Code B3133 GMC - All Door Unlock Circuit High
B3133 GMC Code - All Door Unlock Circuit High

Common Causes of B3133 GMC

  1. Faulty door lock actuator.
  2. Wiring issues such as shorts or open circuits.
  3. Faulty central locking control module.
  4. Corrosion or damage to electrical connectors.
  5. Issues with the key fob or door switch.

Symptoms of B3133 GMC

  1. Inability to unlock all doors at once using the key fob or door switch.
  2. Intermittent issues with door unlocking.
  3. Unusual sounds coming from the door lock actuators.
  4. Doors not locking or unlocking as expected.
  5. Warning light on the dashboard related to the door lock system.

How to Fix B3133 GMC

  1. Diagnose the specific cause of the high voltage condition in the all door unlock circuit using a diagnostic scanner.
  2. Inspect the door lock actuators, wiring, and central locking control module for any visible damage or issues.
  3. Test the electrical connections and components for continuity and proper voltage levels.
  4. Replace any faulty door lock actuators, repair damaged wiring, or replace the central locking control module as needed.
  5. Clear the diagnostic trouble codes and test the door locking system to ensure proper operation.

Cost to Fix B3133 GMC

The cost of repairing a B3133 GMC code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the cost of parts such as a door lock actuator or central locking control module can range from $50 to $200 or more. Labor costs can range from $100 to $300 or more, depending on the complexity of the repair and the shop's hourly rates. It's recommended to get a quote from a trusted auto repair shop to get a more accurate estimate for the repair.

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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 B3133 GMC Code

1. What are the common symptoms of OBDII code B3133 GMC (All Door Unlock Circuit High)?

- Common symptoms include difficulty unlocking all doors simultaneously, sporadic door unlocking, and malfunctioning key fob remote.

2. What can cause the OBDII code B3133 GMC to trigger?

- This code is typically triggered by a high voltage condition in the all door unlock circuit, often due to a short circuit or faulty wiring.

3. How can I diagnose the issue related to the All Door Unlock Circuit High code?

- To diagnose the issue, you can start by checking the wiring and connections in the all door unlock circuit, inspecting for any visible damage or corrosion.

4. Can a malfunctioning key fob be the cause of the B3133 GMC code?

- Yes, a malfunctioning key fob can potentially cause the All Door Unlock Circuit High code if it is sending incorrect signals to the vehicle's control module.

5. What are the repair tips for fixing the B3133 GMC code?

- Repair tips may include repairing or replacing damaged wiring, connectors, or components in the all door unlock circuit, resetting the vehicle's control module, or reprogramming the key fob if necessary.

6. Is it safe to continue driving with the B3133 GMC code present?

- While the vehicle may still be drivable with this code, it is recommended to address the issue promptly to avoid potential inconvenience or safety concerns related to door unlocking functionality.

7. Can extreme weather conditions affect the All Door Unlock Circuit High code?

- Yes, extreme weather conditions such as excessive heat or moisture can sometimes exacerbate electrical issues in the door unlock circuit, leading to the B3133 GMC code.

8. Are there any recalls or technical service bulletins related to the B3133 GMC code?

- It is advisable to check with the manufacturer or a trusted dealership for any relevant recalls or technical service bulletins that may pertain to the All Door Unlock Circuit High code.

9. Will resetting the vehicle's battery help clear the B3133 GMC code?

- Resetting the vehicle's battery may temporarily clear the code, but if the underlying issue causing the All Door Unlock Circuit High persists, the code is likely to reappear.

10. Can a DIY enthusiast resolve the B3133 GMC code issue, or is professional assistance recommended?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to address the B3133 GMC code by following repair guides or seeking assistance from online automotive forums. However, if unsure, it is recommended to consult a professional technician for accurate diagnosis and repair.

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