Visual Inspection
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1997 Pontiac Grand Prix, 1997 Pontiac Firebird, 1997 Pontiac Bonneville, 1997 Oldsmobile Regency, and 1997 Oldsmobile LSS. However, it is still accessible from the selected car via links, so may be relevant.
Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Ensure vacuum hoses are properly routed and not pinched or cut. If necessary, see VACUUM DIAGRAMS article to verify routing and connections. Inspect air induction system for possible vacuum leaks.