GM Repair Problems? Ask GM Repair Expert Now.
I am sorry your having this problem
do you have a multi meter on hand ?
when it will not crank and you head the starter relay click can you see if the small purple wire at the starter solenoid shows 12 volts at the small stud it is connected too every time you hold the key to crank position ?
the purple wire only showed 5 volts ?
with the key ON if you jump the small purple wire terminal to the big power wire terminal at the starter solenoid will it crank over and start up with the key ON ?
if you can jump the starter and it will run fine then this issue can be the power from neutral switch either not getting power in or out of it
can you see when holding the key to crank if the yellow wire at the neutral switch on the top of the transmission where the shift cable connects to the transmission shows 12 volts at it when holding the key to crank ?
what does the purple read at the neutral switch when holding the key to crank ?