Diagnostic Procedures

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Fig 1: DTC P0440: Evaporative Emissions System (Steps 1-4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0440: Evaporative Emissions System (Steps 5-13)

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC P0440: Evaporative Emissions System (Steps 14-20)

Courtesy of GENERAL MOTORS CORP.