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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 MANUALSCHEVROLET2018SONIC LS, 1.8L ENG VIN H, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSPOWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS
2018 Chevrolet Sonic LS, 1.8L Eng VIN H, Automatic Trans
Power Door Lock System And Release Systems
2018 Chevrolet Sonic LS, 1.8L Eng VIN H, Automatic TransSECTION Power Door Lock System And Release Systems
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC B1474 or B3849
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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 (Notchback)
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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 (Hatchback)
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B2494
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B2730
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B324A or B3245
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3265
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3618
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions 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 (Notchback)
- Exterior Door Handle Switch Malfunction (Hatchback)
- Hatch Release Malfunction
- Door Ajar Indicator Malfunction
- Power Door Lock Key Cylinder Switches Malfunction
- Power Door Locks Malfunction
- Trunk Release Malfunction
- Trunk Ajar Indicator Malfunction
- Door Will Not Open/Close, Door Binding, or Locks, Handles, or Cylinders Do Not Function
- DTC B1474 or B3849
- Repair Instructions
- Front Side Door Inside Handle Cable Replacement
- Rear Side Door Inside Handle Cable Replacement
- Front Side Door Lock Cylinder Replacement
- Rear Door Lock Cylinder Replacement
- Front Side Door Outside Handle Replacement
- Front and Rear Side Door Outside Handle Rod Clip Replacement
- Front Side Door Outside Handle Bracket Replacement
- Rear Side Door Outside Handle Bracket Replacement
- Liftgate Latch Replacement
- Rear Compartment Lid Inside Handle Replacement
- Rear Side Door Outside Handle Replacement (Sedan)
- Rear Side Door Outside Handle Replacement (Hatchback)
- Front Side Door Latch Replacement
- Rear Compartment Lid Latch Replacement
- Rear Side Door Latch Replacement
- Front Side Door Lock Cylinder Opening Cover Replacement
- Rear Side Door Lock Cylinder Opening Cover 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 (Sedan)
- Rear Side Door Locking Rod Replacement (Hatchback)
- Rear Side Door Locking Rod Bellcrank Replacement
- Rear Side Door Outside Handle Rod Adjustment
- Rear Side Door Outside Handle Rod Replacement (Sedan)
- Rear Side Door Outside Handle Rod Replacement (Hatchback)
- Front Side Door Lock Striker Adjustment
- Front Side Door Lock Striker Replacement
- Liftgate Latch Striker Replacement
- Rear Compartment Lid Latch Striker Replacement
- Rear Side Door Lock Striker Adjustment
- Rear Side Door Lock Striker Replacement
- Liftgate Release Switch Replacement
- Door Lock Switch Replacement
- Description and Operation
RENDER: 1.0x
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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.