SCOTTY KILMER PLEASE HELP 2000 Chevy Silverado 3door LS 5.3 liter automatic with overdrive/towing button 250,000 miles anti-theft with no key fobs or chips in keys JUST SOLID METAL KEYS bought in 2009. Just recently turn key to on but no fuel pump coming on, key in start position no crank and dash lights go off. Starter, fuel pump changed 5yrs ago and alternator 3 yrs old they were all original parts replaced brand new. Battery 1 1/2 yrs old. I think it's the anti-theft system gone bad can't find anti-theft modules. But know not under steering wheel or radio took dash apart. The security system if driver took key out and looked doors if you open door from inside alarm would beep and lights would flash. PLEASE HELP!
Your version of GM's Passlock doesn't disable the fuel pump from running.
It works by "disabling" the fuel injectors.
It wouldn't turn your dash lights off either.
In your case you may want to check the wires in the steering column going to the ignition switch and if they're OK maybe suspect a faulty ignition switch.
As always check your battery and ground wires for tight connections and make sure there's no corrosion
GM Passlock/Passkey systems don't disable the starter.
If you have an aftermarket system, then that needs to extricated (good luck)
If not, then you need to look at your ignition circuits. Ignition switches and relays , starter fuses and relays, and fuel pump fuses and relays.
Start with a good set of wiring diagrams (Haynes manuals work great) and a multimeter. Make sure the right parts are getting the right voltage, one section at a time.
