Chevrolet Sonic Repair Manual: Catalytic Converter

Secondary Air Injection System Description

The Secondary Air Injection System aids in the reduction of hydrocarbon exhaust emissions during a cold start. This occurs when the start-up engine coolant temperature (ECT) is between −10 t ...

Catalytic Converter Heat Shield Replacement (LUV)

Catalytic Converter Heat Shield Replacement Callout Component Name Warning: Refer to Exhaust Service Warning. ...

Other materials:

Traction Off Light
This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then turns off. The traction off light comes on when the Traction Control System (TCS) has been turned off by pressing and ...

Cylinder Head Cleaning and Inspection
Valve Cleaning and Inspection Warning: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin. Note: Do not scratch the valve stem with the wire brush. Clean the valves of carbon, oil and varnish. Carbon can be remove ...

Control Solenoid Valve and Transmission Control Module Assembly Replacement
Removal Procedure Remove the transmission control valve body cover. Refer to Control Valve Body Cover Replacement. Disconnect the output speed sensor electrical connector (2). Disconnect the shift position switch electrical connector (3). Disconn ...