AutoCodes – GMC – B3265 GMC

B3265 GMC Code - Trunk Lid Unlatch Output Circuit

Quick Answer

When the Body Control Module (BCM) receives a liftgate window 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 Liftgate Window Unlatch Relay, Liftgate Window Unlatch Relay harness is open or shorted, Liftgate Window Unlatch Relay 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: B3265 GMC indicates Trunk Lid Unlatch Output Circuit.
Common causes: Common causes include Faulty Liftgate Window Unlatch Relay, Liftgate Window Unlatch Relay harness is open or shorted, Liftgate Window Unlatch Relay 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 1,218

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3265 GMC Description

When the Body Control Module (BCM) receives a liftgate window 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 window latch. The Diagnostic Trouble Code (DTC) sets when BCM detects a short to voltage on the liftgate window unlatch relay control circuit. A short to ground or an open/high resistance in the BCM B+ circuit.

OBDII Code B3265 GMC - Trunk Lid Unlatch Output Circuit - AutoCodes.com — B3265 GMC Code - Trunk Lid Unlatch Output Circuit

What does this mean?

What are the Possible Causes of the DTC B3265 GMC?

Faulty Liftgate Window Unlatch Relay
Liftgate Window Unlatch Relay harness is open or shorted
Liftgate Window Unlatch Relay circuit poor electrical connection

How to Fix the DTC B3265 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 B3265 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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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 B3265 GMC Code

1. What are common symptoms of OBDII code B3265 GMC (Trunk Lid Unlatch Output Circuit)?

- Common symptoms include the trunk lid failing to unlatch or open, a warning light on the dashboard, and potential issues with the trunk release button.

2. What are possible causes of OBDII code B3265 GMC?

- Potential causes include a faulty trunk release switch, damaged wiring in the trunk lid circuit, a malfunctioning trunk latch mechanism, or a problem with the body control module.

3. How can I diagnose the cause of OBDII code B3265 GMC?

- Start by checking the trunk release switch for proper function, inspecting the wiring for damage or loose connections, testing the trunk latch mechanism, and using a diagnostic scanner to read the specific fault codes.

4. Can I repair OBDII code B3265 GMC myself?

- Depending on your knowledge and experience, you may be able to repair this issue yourself by replacing the faulty trunk release switch, repairing damaged wiring, or addressing other identified issues.

5. Should I reset the OBDII code B3265 GMC after making repairs?

- Yes, it is recommended to reset the code using an OBDII scanner after making any repairs to clear the fault code and see if the issue has been resolved.

6. Is it safe to drive with OBDII code B3265 GMC active?

- It is generally safe to drive with this code, but you may encounter difficulties opening the trunk in case of an emergency. It is recommended to address the issue promptly.

7. How much does it cost to repair OBDII code B3265 GMC at a mechanic?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can extreme weather conditions cause OBDII code B3265 GMC to trigger?

- Yes, extreme temperatures or moisture can sometimes cause electrical issues that lead to the triggering of this code. Ensure all electrical components are properly sealed and insulated.

9. Are there any preventive measures to avoid OBDII code B3265 GMC from occurring?

- Regularly checking and maintaining the trunk release system, keeping the trunk area clean and dry, and addressing any electrical issues promptly can help prevent this code from occurring.

10. Will disconnecting the car battery reset OBDII code B3265 GMC?

- Disconnecting the car battery may reset the code temporarily, but it is recommended to use an OBDII scanner for a proper reset and diagnosis of the issue.