WARNING: This page is about a different car, the 1996 Pontiac Bonneville, 1996 Oldsmobile LSS, 1996 Oldsmobile Eighty-Eight, and 1996 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
Check for faulty connection at PCM. Check KS connector for damage. Insure KS is installed properly.