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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Engine Controls Self-Diagnostics - 5.0L & 5,7L) >> Diagnostic Tests >> DTC P0440: EVAP System - Large Leak >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. 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 procedures.

  1. 4

    This step verifies that a failure condition is active.

  2. 5

    This step is used to verify if a leak is present.

  3. 6

    This step verifies proper operation of the FTP sensor.

  4. 10

    This step tests the EVAP canister purge valve for a restriction or blockage.

  5. 19

    This step verifies that repairs are complete and that no other condition is present.

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