Chevrolet Cobalt Service & Repair Manual: Emission Controls

Engine Management

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General Motors Co.

FIG. NO. BUICK: EVAP System & Canister: Centu ...

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Chevrolet Cobalt Service & Repair Manual. Air Conditioning System Leak, Inspection
A visual inspection must always be performed to confirm the presence of aftermarket components, potential collision damage, or areas of concern. With the oils used for R12 systems, leak areas often collected much dirt and would build up sometimes large displays of road grime. ...