To the top of the document
Orlando
   
GMDE Start Page Load static TOC Load dynamic TOC Help?

Fuel Filler Door Release Malfunction

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.

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Fuel Door Actuator Control

B3125 02. B3130 02, B3135 02

1

1

--

1. Fuel Door Release Malfunction

Circuit/System Description

The locking and unlocking of the fuel door is a function of the power door lock system. The fuel door unlatch actuator shares the circuit with the door latch unlock control circuit. The body control module (BCM), upon receipt of a lock switch lock or unlock signal, will switch the appropriate door latch, as well as a fuel filler door release actuator control circuits to B+ voltage. The opposing side of the door latch and fuel filler door release actuator is connected to ground provided by the BCM through the other the door latch control circuits, along with the fuel filler door release actuator, will lock or unlock as commanded.

Reference Information

Schematic Reference

Release Systems Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Fuel Fill Door 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
  1. Command the door latches to LOCK and UNLOCK with a scan tool, Each interior door lock knob should move between LOCK and UNLOCK.
    2. ⇒If any or all doors do not LOCK or UNLOCK, refer to Power Door Locks Malfunction .
  2. Command the door latches to LOCK and UNLOCK with a scan tool, the M27 fuel door release actuator should LOCK and UNLOCK while changing between the commanded states.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the M27 fuel door release actuator.
  2. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 2.
  3. Command the door latches to LOCK and UNLOCK with a scan tool, the test lamp should briefly illuminate while changing between the commanded states.
    4. ⇒If the test lamp is always OFF, test either control circuit for an open/high resistance.
  4. If all circuits test normal, test or replace the M27 fuel door release actuator.

Component Testing

Fuel Door Latch

  1. Ignition OFF, disconnect the harness connector at the M27 fuel door release actuator.
  2. Install a 25 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the M27 fuel door release actuator should perform the LOCK and UNLOCK functions.
    3. ⇒If it does not perform as specified, replace the M27 fuel door release actuator.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Fuel Tank Filler Door Replacement

   


© Copyright Chevrolet. All rights reserved