The single click is likely the starter relay clicking, although it could be another relay. Next time it does it, leave the key in the on position and jumper the starter relay socket. If it starts, try swapping with a different relay (horn, wipers, something non-critical) . If that does not fix it, look upstream - ignition switch or something else in the circuit. If after jumpering the relay socket it still does not do it, you either have a bad ground or a bad starter solenoid. You can reach the starter with a screwdriver and jumper the across the solenoid terminal and the starter terminal, if it starts then you have a bad starter solenoid. If neither jumpers

 

Which one do I jump it From ? I’m about to take pictures really quick . I at least want to attempt to crank it once more before the sun is down the starter relay fuse like take it out and use a wire to cross it else where ?

 

When you say bad ground like is it not making contact with the frame or the wire itself is short ?

 

Watched your video on the grounds. You should check the ground connection on the chassis/shock tower. Here in Chicago I get corrosion on that connection and need to clean it up every year or so. Easy enough to rule out.

 

I actually took that one off this morning and sprayed the crap out of it thinking I got lucky lol thanks though . I’m lost for ideas for this truck. … I drove it like literally two days ago and everything worked fine !?? Cranked up all day on the first start . Parked it and left it a few hours got back in ran fine then the other morning tried to use it for work and the click was there . What I’m not understanding is if it was a fuse of some sort or a short , wouldn’t not crank at all ? Or give me issues that same day ? I’m thinking that something is getting wet with oils or something and interferes with something idk . Then a few days go by then I go out and start her up again like nothing ever happened ? Idk but I can’t trust my wife and kids in the ol Landie … sad but I might have to let her go 😞

 

Crank Position Sensor

 

I’ll give it a try just to say I changed it out . I’ll order one off eBay just to mark that one off the list . Thanks I’ll get back to the forum after the repair !

 

Suggest you look at a couple of videos on how to jumper relays and sockets if you are not familiar, it will help a lot. Basically you are manually performing the function that the relay is designed to do.

 

CKPS does not prevent it from cranking, only from starting.

 

Yes, depending on location the aluminum or steel under the ground cable can corrode. Best to remove the cable, clean the surface with wire brush until shiny, reinstall, then coat with battery protector to prevent future corrosion.