Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2015 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN BFACTORY OEM SERVICE PROCEDURE
Power Door Lock System And Release Systems
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC B2976, B2991, B2996, or B3001: Door Ajar
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3125, B3130, or B3135: Door Lock/Unlock
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3140, B3145, B3150, or B3155: Lock/Unlock Switch
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3265: Trunk/Hatch/Liftglass Release
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- Symptoms - Vehicle Access
- Access Panel Release Malfunction
- Cargo Door Ajar Indicator Malfunction
- Door Ajar Indicator Malfunction
- Power Door Locks Malfunction
- Door Will Not Open/Close, Door Binding, or Locks, Handles, or Cylinders Do Not Function
- DTC B2976, B2991, B2996, or B3001: Door Ajar
- Repair Instructions
- Door Control Replacement
- Lock Cylinder Binding
- Door Lock Cylinder Replacement
- Rear Door Lock Cylinder Replacement
- Front and Rear Side Door Outside Handle Rod Clip Replacement
- Intermediate Side Door Inside Handle Replacement
- Intermediate Side Door Outside Handle Replacement
- Door Outside Handle Replacement
- Sliding Door Outside Handle Replacement
- Rear Door Inside Handle Replacement
- Rear Door Latch Control Replacement
- Rear Side Door Latch Control Replacement
- Sliding Door Inside Handle Replacement
- Rear Door Latch Replacement - Lower
- Rear Side Door Latch Replacement
- Rear Side Door Lower Latch Replacement
- Rear Side Door Latch Replacement - Upper
- Rear Door Latch Replacement - Upper
- Rear Door Lock Replacement
- Intermediate Side Door Lock Replacement
- Front Side Door Lock Replacement
- Sliding Door Rear Lock Replacement
- Door Lock Harness Contact Replacement
- Body Side Upper Front and Rear Access Panel Strut Replacement
- Door Striker Replacement
- Front Side Door Lock Striker Replacement
- Lock Striker Replacement - Lower
- Rear Side Door Latch Striker Replacement
- Rear Side Door Latch Striker Adjustment
- Rear Door Latch Striker Replacement - Upper
- Rear Side Door Latch Striker Replacement - Upper
- Door Lock Switch Replacement
- Description and Operation
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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