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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Control System & Fuel System - 4.8L, 5.3L, And 6.0L - DTC P0135 To DTC P0451) >> DTC P0442 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  • Refer to the J 41413-200  operation manual for detailed instructions.
  1. Connect the J 41413-200  to the vehicle at the EVAP service port.
  2. Seal the EVAP system and use the flow meter on the J 41413-200  , calibrated to 0.51 millimeter (0.020 inch) to determine that there is no leak in the EVAP system.
    • If a leak is detected, use the J 41413-200  to apply smoke to the EVAP system at the service port until the leak is located.
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