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:

Manual Transmission
The vehicle may be equipped with a 5-speed or 6-speed manual transmission. Caution Shifting the vehicle initially into any gear other than 1 (First) or R (Reverse) can damage the clutch. Shift the manual transmission in the proper sequence, and time the gear shifting with the accelerator to ...

Instrument Panel Lower Intermediate Reinforcement Replacement
Instrument Panel Lower Intermediate Reinforcement Replacement Callout Component Name Preliminary Procedures Disable the SIR system. Refer to SIR Disabling and Enabling. Remove the passenger inflatable restraint instrument ...

Drive Range, Sixth Gear (Gen 1)
As vehicle speed increases, the transmission control module (TCM) processes input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low 26 pressure control so ...