AutoCodes – GMC – B3245 GMC

B3245 GMC Code - Rear Cargo Door Lock Actuator Circuit

Quick Answer

When the Body Control Module (BCM) receives a liftgate release command, it will provide voltage to one side of the relay and ground to the other side of the relay. Common causes include Faulty Rear Cargo Door Lock Actuator, Rear Cargo Door Lock Actuator harness is open or shorted, Rear Cargo Door Lock Actuator 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
B3245 GMC indicates Rear Cargo Door Lock Actuator Circuit.
Common causes
Common causes include Faulty Rear Cargo Door Lock Actuator, Rear Cargo Door Lock Actuator harness is open or shorted, Rear Cargo Door Lock Actuator 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 599
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 05, 2020
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Code B3245 GMC Description

When the Body Control Module (BCM) receives a liftgate release command, it will provide voltage to one side of the relay and ground to the other side of the relay. This will energize the relay causing the switch side of the relay to close and will then provide B+ voltage to the liftgate latch assembly.
OBDII Code B3245 GMC - Rear Cargo Door Lock Actuator Circuit - AutoCodes.com
B3245 GMC Code - Rear Cargo Door Lock Actuator Circuit

What are the Possible Causes of the DTC B3245 GMC?

  • Faulty Rear Cargo Door Lock Actuator
  • Rear Cargo Door Lock Actuator harness is open or shorted
  • Rear Cargo Door Lock Actuator circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3245 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 B3245 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.

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Need Help with the 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 B3245 GMC Code

1. What are common symptoms of OBDII code B3245 in a GMC related to the Rear Cargo Door Lock Actuator Circuit?

- Common symptoms include the rear cargo door failing to lock or unlock properly, unusual noises coming from the door lock actuator, and the door lock not responding to the key fob or interior switch.

2. What are possible causes of OBDII code B3245 related to the Rear Cargo Door Lock Actuator Circuit in a GMC?

- Possible causes include a faulty rear cargo door lock actuator, damaged wiring or connectors in the circuit, a blown fuse, or a problem with the body control module.

3. How can I diagnose the issue causing OBDII code B3245 in my GMC's Rear Cargo Door Lock Actuator Circuit?

- You can start by visually inspecting the wiring and connectors for any damage, checking the fuse related to the door lock actuator, and using a multimeter to test the actuator's resistance and power supply.

4. Can I drive my GMC safely with OBDII code B3245 related to the Rear Cargo Door Lock Actuator Circuit?

- While it may be safe to drive with this code, it is recommended to address the issue promptly to avoid potential security risks or further damage to the door lock system.

5. How can I repair OBDII code B3245 in a GMC related to the Rear Cargo Door Lock Actuator Circuit?

- Repairing this code typically involves replacing the faulty rear cargo door lock actuator, repairing any damaged wiring or connectors, checking and replacing the fuse if necessary, and resetting the trouble code with an OBDII scanner.

6. Are there any DIY tips for troubleshooting OBDII code B3245 in a GMC's Rear Cargo Door Lock Actuator Circuit?

- DIY tips include checking for loose or corroded wiring connections, ensuring the actuator is receiving power and ground, and testing the actuator's functionality by applying power directly to it.

7. How much does it cost to fix OBDII code B3245 related to the Rear Cargo Door Lock Actuator Circuit in a GMC?

- The cost of fixing this issue can vary depending on the root cause, but it typically ranges from $100 to $300 for parts and labor if a professional repair service is required.

8. Can weather conditions affect the occurrence of OBDII code B3245 in a GMC's Rear Cargo Door Lock Actuator Circuit?

- Extreme weather conditions, such as excessive heat or cold, can potentially affect the performance of the door lock actuator and its circuit, leading to the triggering of this OBDII code.

9. Is it possible for OBDII code B3245 in a GMC to be a false alarm?

- While rare, false alarms can occur with OBDII codes. It's recommended to thoroughly diagnose the issue to confirm whether it is a genuine problem with the Rear Cargo Door Lock Actuator Circuit or a false alarm triggered by a sensor glitch.

10. How long does it typically take to repair OBDII code B3245 related to the Rear Cargo Door Lock Actuator Circuit in a GMC?

- The repair duration can vary based on the extent of the issue and the availability of parts. On average, the repair process can take anywhere from 1 to 3 hours to complete.

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