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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1147 (Engine Controls And Fuel - 3.6L - DTC P0137 To DTC P0497) >> DTC P0449, P0498, or P0499 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure for 20-24 ohms of resistance between the terminals of the EVAP vent solenoid valve.
    • If not within the specified range, replace the EVAP vent solenoid valve.
  2. Test for infinite resistance between each terminal of the EVAP vent solenoid valve and the EVAP vent solenoid valve housing.
    • If not the specified value, replace the EVAP vent solenoid valve.
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