Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Automatic Transmission Shift Lock Control Description and Operation

Chevrolet Sonic Repair Manual / Powertrain / Internal Combustion Powertrain Control / Transmission Control / Automatic Transmission Shift Lock Control Description and Operation

The automatic transmission park lock control system is a safety device that prevents an inadvertent shift out of PARK. The driver must press the brake pedal before moving the park lever out of the PARK position. The system consists of the following components:

The body control module controls the voltage to the park lock control solenoid through the park lock control solenoid controlled voltage circuit. The following conditions must be met before the body control module will supply voltage to the park lock solenoid:

Since the park lock control solenoid is permanently grounded, the body control module supplies voltage to the automatic transmission park lock control solenoid, unlocking the park lever allowing the driver to move the park lever out of the PARK position as the solenoid energizes. When the brake pedal is not applied, the body control module turns the control voltage output of the park lock control solenoid OFF, de-energizing the park lock control solenoid. The de-energized solenoid mechanically locks the park lever in the PARK position.

Transmission Control Replacement
Removal Procedure Remove the floor console. Refer to Front Floor Console Replacement. Lift both cable adjustment retainers (1), one for each cable, to release the s ...

Automatic Transmission Shift Lock Control Function Check
Warning: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. Before starting this check, be sure there is enough roo ...

Other materials:

Safety Function Override
If the battery on the vehicle has been recharged or disconnected, or is not working, the windows will need to be reprogrammed for the express-up feature to work. Before reprogramming, replace or recharge the vehicle's battery. To program the driver window: 1. With the ignition in ACC/ ACCE ...

Gear Position Sensor Replacement
Gear Position Sensor Replacement Callout Component Name Preliminary Procedure Unclip the engine control module (ECM) and bracket from the battery tray. 1 Gear Position Sensor Magnet Bolt ...

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 ...

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