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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 335 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P0448: Control System - Vent Shorted >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

To locate an intermittent problem, use scan tool to command EVAP VENT SOLENOID on and off with ignition on, engine off. Wiggling wires while listening for the EVAP vent solenoid to stop clicking may locate a shorted solenoid or the area where a short to voltage in the wiring may exist.

For intermittent conditions, refer to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 2.2L & 3.0L VUE article.

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