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.
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HOMESERVICE MANUALSBUICK2015REGAL BASE, 2.0L ENG VIN X, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSPOWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS
2015 Buick Regal Base, 2.0L Eng VIN X, AWD
Power Door Lock System And Release Systems
2015 Buick Regal Base, 2.0L Eng VIN X, AWDSECTION Power Door Lock System And Release Systems
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC B1474 or B3849: Exterior Door Handle 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 B1534 or B1535: Rear Door Handle 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 B2494: Liftgate Handle Switch
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B2730: Interior Trunk Lid Unlatch Switch
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B297B or B297C: Door Open 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 B3125, B3130, or B3135: Doors Lock/Unlock Circuits
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3140, B3145, B3150, or B3155: Door Lock/Unlock Switches
- 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 Lid Unlatch Output Circuit
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3618: Exterior Liftgate Unlatch Switch
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Symptoms - Vehicle Access
- Exterior Door Handle Switch Malfunction
- Fuel Filler Door Release Malfunction
- Door Ajar Indicator Malfunction
- Power Door Lock Key Cylinder Switches Malfunction
- Power Door Locks Malfunction
- Trunk Release Malfunction
- Trunk Ajar Indicator Malfunction
- Side Door Window Mechanical Diagnosis
- Door Will Not Open/Close, Door Binding, or Locks, Handles, or Cylinders Do Not Function
- DTC B1474 or B3849: Exterior Door Handle Switch
- Repair Instructions
- Front Side Door Inside Handle Cable Replacement
- Rear Side Door Inside Handle Cable Replacement
- Front Side Door Lock Cylinder Replacement
- Front Side Door Outside Handle Replacement (Passive Entry ATH)
- Front Side Door Outside Handle Replacement (Base)
- Front and Rear Side Door Outside Handle Rod Clip Replacement
- Front Side Door Outside Handle Bracket Replacement (Base)
- Rear Side Door Outside Handle Bracket Replacement (Passive Entry Passive)
- Rear Side Door Outside Handle Replacement
- Rear Compartment Lid Latch Replacement
- Front Side Door Lock Cylinder Bezel Replacement
- Front Side Door Lock Replacement
- Rear Side Door Lock Replacement
- Front Side Door Locking Rod Replacement
- Front Side Door Lock Cylinder Rod Replacement
- Front Side Door Outside Handle Rod Adjustment
- Front Side Door Outside Handle Rod Replacement
- Rear Side Door Locking Rod Replacement
- Rear Compartment Lid Hinge Spring Replacement
- Front Side Door Lock Striker Adjustment
- Front Side Door Lock Striker Replacement
- Rear Compartment Lid Latch Striker Replacement
- Rear Side Door Lock Striker Adjustment
- Rear Side Door Lock Striker Replacement
- Door Lock Switch Replacement - Front
- Rear Compartment Lid Release Switch Replacement (Interior)
- Rear Compartment Lid Release Switch Replacement (Exterior)
- Description and Operation
RENDER: 1.0x
NO RELATED
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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.