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Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17147
Experience:  15 years GM master tech
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Just changed out a 4l60e transmission in a 2005 chevy

Customer Question

just changed out a 4l60e transmission in a 2005 chevy silverado 1500 4.8 liter, Can't get it to crank now, put a new park/neutral switch in, when i turn the switch to crank it , nothing, it doesnt even turn over, but all the lights and all do come on , even dropped starter back out just to make sure connections were good.it's got me baffled, hopefully you can help.
Submitted: 1 year ago.
Category: Chevy
Expert:  Gary replied 1 year ago.

at the park neutral switch with the key ON does the pink wire show 12 volts ?

then when holding the key to crank does the dark green show 12 volts every time you hold the key to crank position ?

Customer: replied 1 year ago.
haven't tried either
Expert:  Gary replied 1 year ago.

lets see if the pink has power with the key ON and see if the dark green shows 12 volts when the key is held to crank

Customer: replied 1 year ago.
both are correct
Expert:  Gary replied 1 year ago.

ok if you put your fingers on the starter relay in the under hood fuse box do you feel that relay click every time the key is held to crank ?

Customer: replied 1 year ago.
Customer: replied 1 year ago.
on that model does the computer have to be rebooted or whatever its called when you change the transmission out
Expert:  Gary replied 1 year ago.

no it should crank over after a transmission change

are you 100 % sure all the grounds are connected correctly on the transmission area ?

Customer: replied 1 year ago.
i have been over and over this thing and everthing is correct as far as i can see
Expert:  Gary replied 1 year ago.

ok see if they relay clicks with your fingers

Customer: replied 1 year ago.
its clicking
Expert:  Gary replied 1 year ago.

ok can you see if the small purple wire at the starter solenoid shows 12 volts at the small terminal at the starter when holding the key to crank ?

Expert:  Gary replied 1 year ago.

how are you making out ?

if you have any questions please ask as i do not get credit for my work until you rate us here at Justanswer !