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:

Starting the Vehicle
1. Aim the RKE transmitter at the vehicle. 2. Press and release . 3. Immediately after completing Step 2, press and hold for at least four seconds or until the turn signal lamps flash. When the engine starts, the parking lamps will turn on and remain on as long as the engine is running. The ...

Heater and Air Conditioning Evaporator Case Replacement
Air Conditioning (A/C) Evaporator Case Assembly Replacement Callout Component Name Preliminary Procedure Remove the instrument panel tie bar. Refer to Instrument Panel Tie Bar Replacement. Remove HVAC module. Refer to Hea ...

Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T30/6T40/6T45/6T50)
The following service procedures require either a programming or a setup event be performed for a complete repair. The transmission control module (TCM) is part of the control solenoid valve assembly, and is not serviced separately. Transmission Control Module (TCM) Replaceme ...