Here is my position, I have walked a straight line for twenty four years since disgracing myself and damaging my family.
I would never use my mother,brother, or anyone to try to reinsert myself into the family. Consequences are just that.
After the battery cables are eliminated from suspicion, pull the starter relay and look at the wiring diagram printed on the side of the relay, note the terminals that are connected when the relay is activated. #30 is battery 12v, #87 is starter solenoid. Closing this circuit is the "screwdriver...
You must disconnect a side post battery cable terminal to check if it is "clean"... I believe your 99 chev will have two cables bundled at the positive terminal of the battery. You MUST remove this connection to check and clean the cables under the red insulator. Take the positive bundle apart...
Yes he is, I am not, and I'm not trying to stir up anything but humor.
This truck was the first perfect example in my shop of "checking the f-clutch by "hand", (with a shop towel reprise)".
all the best'
Nubs
:D