GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Caprice WM 🢒 Body Systems 🢒 Vehicle Access 🢒 DTC B3265

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptor

DTC B3265 00: Trunk/Hatch/Liftglass Release Output Circuit

Circuit/System Description

The body control module (BCM) initiates a rear compartment lid open event based on a ground input provided by the rear compartment lid release switch. When the rear compartment lid release switch is pressed the BCM receives the ground input and applies a ground output to the control side of the rear compartment lid release relay. Battery power is then supplied through the rear compartment lid release relay to the rear compartment lid latch assembly, activating the latch motor and opening the rear compartment lid.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

This DTC will set when the BCM detects a short to ground, short to voltage or an open/high resistance in the trunk release relay control circuit for 5 seconds or greater.

Action Taken When the DTC Sets

When DTC B3265 is set as current, the BCM will disable the trunk release relay control circuit driver.

Conditions for Clearing the DTC
    • The conditions for setting the DTC are no longer present.
    • A history DTC clears after 100 fault-free ignition cycles.
    • The DTC can be cleared using a scan tool.

Reference Information

Schematic Reference

Release Systems Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

    •  Circuit Testing .
    •  Connector Repairs .
    •  Testing for Intermittent Conditions and Poor Connections .
    •  Wiring Repairs .

Scan Tool Reference

Control Module References

Circuit/System Testing
  1. Ignition OFF, disconnect the trunk release relay.
  2. Ignition ON, verify that a test lamp does not illuminate between the trunk release relay control circuit terminal and ground.
    3. ⇒If the test lamp illuminates, test the trunk release relay control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  3. While commanding the trunk release relay on and off with the scan tool, verify that a test lamp illuminates with each command when connected between B+ and the trunk release relay control circuit.
    4. ⇒If the test lamp does not illuminate, test the trunk release relay control circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
    ⇒If the test lamp remains illuminated at all times, test the trunk release relay control circuit for a short to ground. If the circuit tests normal, replace the BCM.
  4. If all circuits test normal, replace the BCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM replacement, setup, and programming