Chevrolet Sonic Repair Manual: Immobilizer

Ignition Lock Cylinder Replacement

Removal Procedure Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Remove the upper trim cover and the lower trim cover f ...

Immobilizer Description and Operation

The immobilizer system functions are provided by the body control module (BCM) and the engine control module (ECM), as well as any modules which store and report the environment identifier. When ...

Other materials:

Piston and Connecting Rod Disassemble
Remove the piston with connection rod. Refer to Piston, Connecting Rod, and Bearing Removal. Note: Note installation position of the piston in respect of the connection rod. Detach the piston from the connection rod. Note: Do not damage the bore. Remove ...

Intake Manifold Disassemble (1.8L LUW and LWE)
Remove the intake manifold absolute pressure sensor bolt (1). Remove the manifold absolute pressure sensor (2) from the intake manifold (3). Remove the intake manifold mount (2) from the intake manifold (1). Remove the throttle body seal& ...

Transmission Fluid Level and Condition Check
Removal Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Remove the front suspension skid plate, if equipped. Refer to Drivetrain and Front Suspension Frame Skid Plate Replacement Place a basin underneath the vehicle. Clean away all ...