EVAP Control System Diagnosis
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Manufacturer does not provide testing procedures for many individual systems and components. For EVAP control system diagnosis, see INSPECTION/MAINTENANCE - EVAPORATIVE EMISSION SYSTEM SET PROCEDURE in SELF-DIAGNOSTICS - 3.1L CENTURY, GRAND PRIX & MALIBU article.