Diagnostic Aids
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
If all circuits to PCM and VSS have been thoroughly checked, check terminal connections at VSS harness connector and at PCM harness connector. If terminals and connectors are okay, replace PCM.