EVAP Control System Diagnosis
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
For EVAP control system diagnosis, see INSPECTION/MAINTENANCE SYSTEM CHECK under DRIVE CYCLES in SELF-DIAGNOSTICS - 4.6L DEVILLE & SEVILLE article.