Trouble Shooting Hints

Note condition of SECURITY indicator light. If indicator stays on or flashes continuously troubleshoot anti-theft system. Check starter solenoid terminals and battery grounds. Check for proper installation of aftermarket electronic equipment. Perform self-diagnostic system test, to be certain no trouble codes are stored in PCM memory which may lead to misdiagnosis. See appropriate TESTS W/CODES - 4.3L , TESTS W/CODES - 5.0L , TESTS W/CODES - 5.7L , TESTS W/CODES - 6.5L or TESTS W/CODES - 7.4L article in ENGINE PERFORMANCE section.

Check 40-amp No. 6 fuse in underhood fuse-relay center, and 10-amp CRANK No. 8 fuse in instrument penal fuse block. Check battery and underhood fuse relay center grounds. See COMPONENT LOCATIONS  table.