Chevrolet Sonic Repair Manual: Air Injection

Emissions

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Secondary Air Injection Check Valve Installation

Install a NEW secondary air injection check valve gasket (1). Install the secondary air injection check valve (2). Caution: Refer to Fastener Caution. Install the ...

Other materials:

All-Season Tires
This vehicle may come with all-season tires. These tires are designed to provide good overall performance on most road surfaces and weather conditions. Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. Origi ...

Hub/Axle Flange and Wheel Stud Runout Inspection
Special Tools GE-8001 Dial Indicator Set , or equivalent Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Mark the location of the wheels to the wheel studs and mark the specific vehicle position on each tire and wheel – LF, LR, RF, RR. Remove the tire and ...

Drive Range, First Gear (Gen 1)
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 deenergize or ?urn OFF?the shift solenoid, and to c ...