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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 370 (Engine Control System - Self-Diagnostics - 4.2L) >> Diagnostic Tests >> DTC P0446: EVAP Vent Valve Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refers to the step numbers in the diagnostic procedures.

  1. 5 -  This step inspects the EVAP vent solenoid electrical operation.
  2. 6 -  This step inspects for a restricted EVAP vent solenoid.
  3. 7 -  This step tests if the restriction is in the EVAP canister or the vent hose.

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