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Engine-Codes – GMC – B1474 GMC

B1474 GMC Code - Right Front/Passenger Exterior Door Handle Switch Circuit

Quick Answer

The B1474 GMC code refers to an issue with the Right Front/Passenger Exterior Door Handle Switch Circuit. Common causes include Damaged wiring or connectors in the door handle switch circuit, Faulty exterior door handle switch, Corrosion or moisture intrusion affecting the electrical connections. 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
B1474 GMC indicates Right Front/Passenger Exterior Door Handle Switch Circuit.
Common causes
Common causes include Damaged wiring or connectors in the door handle switch circuit, Faulty exterior door handle switch, Corrosion or moisture intrusion affecting the electrical connections.
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 B1474 GMC Description

The B1474 GMC code refers to an issue with the Right Front/Passenger Exterior Door Handle Switch Circuit. This code indicates a problem with the electrical circuitry associated with the exterior door handle switch on the right front or passenger side of the vehicle. The exterior door handle switch is responsible for controlling functions such as locking and unlocking the door, activating the interior lights, and potentially other features depending on the vehicle model.

OBDII Code B1474 GMC - Right Front/Passenger Exterior Door Handle Switch Circuit
B1474 GMC Code - Right Front/Passenger Exterior Door Handle Switch Circuit

Common Causes of B1474 GMC

  1. Damaged wiring or connectors in the door handle switch circuit.
  2. Faulty exterior door handle switch.
  3. Corrosion or moisture intrusion affecting the electrical connections.
  4. Issues with the body control module (BCM) or other related components.
  5. Wear and tear over time leading to electrical failures.

Symptoms of B1474 GMC

  1. Inability to lock or unlock the door using the exterior handle switch.
  2. Interior lights not turning on or off when the door handle switch is activated.
  3. Malfunctioning keyless entry system.
  4. Warning light on the dashboard indicating an issue with the door handle switch circuit.
  5. Doors not responding to remote key fob commands.

How to Fix B1474 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the fault codes and testing the electrical connections in the door handle switch circuit.
  2. Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the functionality of the exterior door handle switch and replace it if found to be faulty.
  4. Check the body control module (BCM) for any issues and perform any necessary repairs or replacements.
  5. Clear the fault codes and test the door handle switch to ensure proper operation.

Cost to Fix B1474 GMC

The typical repair costs for addressing the B1474 GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts for this repair, such as a new exterior door handle switch or wiring components, may range from $50 to $200. Labor costs can vary between $100 to $300, depending on the shop's hourly rates and the complexity of the repair process.

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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 B1474 GMC Code

1. What are common symptoms associated with OBDII code B1474 GMC?

- Common symptoms include the right front/passenger exterior door handle switch not working, the door not unlocking or locking properly, and interior lights not turning on when the door is opened.

2. What are the possible causes of OBDII code B1474 GMC?

- Possible causes include a faulty right front/passenger exterior door handle switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module.

3. How can I diagnose the issue related to OBDII code B1474 GMC?

- You can diagnose the issue by inspecting the right front/passenger exterior door handle switch for any visible damage, checking the wiring and connectors for loose connections or corrosion, and using a diagnostic tool to scan for specific error codes.

4. Can OBDII code B1474 GMC be fixed without professional help?

- Depending on the underlying cause, you may be able to fix the issue yourself by replacing the faulty door handle switch, repairing damaged wiring or connectors, or resetting the body control module. However, professional help may be required for more complex issues.

5. Are there any temporary solutions for OBDII code B1474 GMC?

- While temporary solutions are not recommended, you can try manually unlocking and locking the door from the inside or using the key fob to operate the door until the issue is properly diagnosed and repaired.

6. Is it safe to continue driving with OBDII code B1474 GMC unresolved?

- It is not recommended to drive with unresolved OBDII code B1474 GMC, as it may affect the functionality of the right front/passenger door and compromise the safety and security of the vehicle.

7. How much does it typically cost to repair OBDII code B1474 GMC?

- The cost of repairing OBDII code B1474 GMC can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or seek professional help. Costs may range from a few dollars for simple fixes to a few hundred dollars for more complex repairs.

8. Can I prevent OBDII code B1474 GMC from occurring in the future?

- To prevent OBDII code B1474 GMC from occurring in the future, you can perform regular maintenance checks on your vehicle's door handle switches, wiring, and connectors, and address any issues promptly to avoid more serious problems down the line.

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