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:

Cooling Fan Description and Operation (LUV)
The engine cooling fan system is composed of one cooling fan, a series of 5 relays, the engine control module (ECM), and the associated wiring. The cooling fan assembly includes two resistors. This combination of components enables the ECM to operate the cooling fan at 3 speeds usi ...

Camshaft Removal
Note: Note removal sequence 1?E. Remove the 4 camshaft bearing cap bolts. Note: Release the bearing support by striking it gently with a plastic hammer. Remove the first camshaft bearing cap (1). Loosen the 8 exhaust camshaft bear ...

Low and Reverse Clutch Assembly and Low and Reverse Clutch Plate Installation
Low and Reverse Clutch Assembly and Low and Reverse Clutch Plate Installation Callout Component Name 1 Low and Reverse Clutch Assembly (OWC) Note: The Low and Reverse Clutch Assembly should rotat ...