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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 404 (Engine Controls Self Diagnostics - 4.8L, 5.3L & 6.0L Gasoline) >> Diagnostic Tests >> DTC P0449: EVAP Canister Vent Solenoid Valve Control Circuit - Electrical Malfunction >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedure.

  1. 2

    A click should be heard or felt when the valve operates. Ensure that both the ON and the OFF states are commanded. Repeat the commands as necessary.

  2. 5

    This step verifies that the control module is providing ground to the EVAP vent valve.

  3. 6

    This step tests if the EVAP vent valve control circuit is grounded.

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