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. ...

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Service Publications Ordering Information
Service Manuals Service Manuals have the diagnosis and repair information on the engines, transmission, axle, suspension, brakes, electrical, steering, body, etc. Service Bulletins Service Bulletins give additional technical service information needed to knowledgeably service General Motors c ...

Tire Pressure Indicator Sensor Replacement
Removal Procedure Raise the vehicle on a suitable support. Refer to Lifting and Jacking the Vehicle. Remove the tire/wheel assembly from the vehicle. Refer to Tire and Wheel Removal and Installation. Dismount the tire from the rim. Refer to Tire Dismounting and Moun ...

Drive Range, First Gear (Gen 2)
As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, throttle position sensor and other vehicle sensors to determine the precise moment to de-energize or ?urn OFF?the shift solenoid, and to ...