Chevrolet Sonic Repair Manual: ATF Lines

Transmission Fluid Cooler Flushing and Flow Test

GM studies indicate that plugged or restricted transmission oil coolers and pipes cause insufficient transmission lubrication and elevated operating temperatures which can lead to premature transm ...

Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection

Removal Procedure Note: Perform the following procedure when removing the retaining rings and cooler lines from the quick connect fittings located on the radiator a ...

Other materials:

Automatic Door Locks
The vehicle is programmed so that when the doors are closed, the ignition is on, and the shift lever is moved out of P (Park) for automatic transmissions, or when the vehicle speed is above 13 km/h (8 mph) for manual transmissions, the doors and the trunk/liftgate will lock. To unlock the doo ...

Airbag Front Passenger Presence Sensor Replacement
Airbag Front Passenger Presence Sensor Replacement Callout Component Name Warning: Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. All the components in the se ...

Fuel System Cleaning
Note: If the fuel filter is plugged, the fuel tank should be inspected internally and cleaned if necessary. Drain the fuel tank. Refer to  Fuel Tank Draining. Remove the fuel pump module assembly. Refer to  Fuel Tank Fuel Pump Module Replacement. Inspect the fue ...