Section 42 (HVAC System - Automatic): Self-Diagnostics: Notes
WARNING: This page is about a different car, the 1998 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
To insure fault conditions have been repaired correctly, perform normal system response test before and after performing any self-diagnostics procedure or DTC tests. See NORMAL SYSTEM RESPONSE TEST under TROUBLE SHOOTING.