FixVault

Diagnostic Procedures

NOTE: EVAP Pressure/Purge Diagnostic Station (J- 41413) is required to pressurize EVAP system in the following test.
Fig 1: DTC P0440: EVAP System (Steps 1-4)
G00248519Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0440: EVAP System (Steps 5-14)
G00248520Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0440: EVAP System (Steps 15-18)
G00248521Courtesy of GENERAL MOTORS CORP.