GM Service Manual Online
For 1990-2009 cars only

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 01 : Trunk Release Output Circuit Short to Battery

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Rear Compartment Lid Release Close Switch B+

1

1

B3641

--

Rear Compartment Lid Pull Down Actuator B+

1

1

1

--

Trunk Release Switch B+

1

1

1

--

Trunk Key Switch Signal

1

1

1

--

Trunk Release Control Signal

1

1

B3265

--

Exterior Trunk Release Switch Signal

B3618

1

1

--

Interior Trunk Release Switch Signal

1

1

1

--

Rear Compartment Lid Pull Down Actuator Signal

B1297

B1297

B1297

--

Rear Compartment Lid Pull Down Actuator Ground

1

1

1

--

Rear Compartment Lid Release Switch Exterior Ground

1

1

1

--

Rear Compartment Lid Release Switch Interior Ground

1

1

1

--

Rear Compartment Lid Release Close Switch Ground

1

1

1

--

1. Trunk Release Inoperative

Circuit/System Description

The body control module (BCM) grounds the trunk release control signal circuit based on trunk release switch signal from either the interior rear compartment lid release switch or the exterior rear compartment lid release switch. The rear compartment lid pull down actuator is supplied battery voltage at all times via the TRUNK LATCH fuse. When either the interior or exterior rear compartment lid release switch is pressed, the trunk release switch signal circuit is grounded. This input will request the BCM to momentarily ground the trunk release control signal circuit, which will open the rear compartment lid.

Conditions for Running the DTC

The rear compartment lid release is active.

Conditions for Setting the DTC

The BCM detects a short to battery on the trunk release control signal circuit for greater than 125 ms.

Actions Taken When the DTC Sets

The BCM disables the rear compartment lid release for the duration of the ignition cycle.

Conditions for Clearing the DTC

    • The condition responsible for setting the DTC no longer exists.
    • A history DTC will clear after 50 malfunction-free ignition cycles.

Reference Information

Schematic Reference

Release Systems Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Luggage Compartment Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Command the Trunk Release with a scan tool, the rear compartment lid pulldown actuator should release the trunk lid.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the rear compartment lid pull down actuator.
  2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal B and ground.
  3. If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  4. If all circuits test normal, replace the rear compartment lid pull down actuator.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Rear Compartment Lid Latch Replacement
    •  Control Module References for BCM replacement, setup, and programming