1994 Chevy Silverado Electrical Issue

I have a 194 Chevy Silverado 1500 p/u 5.7L V8. Last week I got in and started it and it did start but my windshield wipers came on and would not go off. I turned the truck off and tried to start it again and got nothing but a clicking noise, I presume it was the starter. All of the lights work, the radio works, air, heat all works it just will not start. I had it towed to a mechanic shop where it has been for the last week or so. The mechanic has no idea what is wrong with it. The engine is fine and not locked, transmission is fine, battery is good (less than a year old). Just put a new starter in less than 6 weeks ago. He even tried to jump it from the starter with a screwdriver...nothing...tried jumper cables...nothing....put in a different battery and starter...nothing...ANY ideas??

 

will not crank?or will crank and no start?

 

if no crank....do you have battery voltage on small purple wire at starter solenoid when ignition in crank position.

 

If your mechanic tried jumping the starter at the solenoid and nothing happened then either the heavy battery cable is open between the starter and battery or if that terminal has 12 volts on it.....the starter is bad.

 

Chev had a lot of circuit board trouble with their wipers,so this may not be related to the other problem. Run jumpers directly to starter to see if it is good. Dont forget the ground circuit.

 

Sounds like a voltage supply issue. If something as basic as a non working starter are an issue for your mechanic you might consider a new mechanic. There's an ign switch, a backup light starter switch and a starter motor. Voltage drop tests and a simple starter draw test should show the issue, might not find which component but should show why it doesn't start. I forgot to mention the battery and cables as possibilities. The wiper issue may well be something else and how does he know the engine and trans are all in order when it won't run? just a thought