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Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 15692
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: 11 months ago.
Category: Chevy
Expert:  Gary replied 11 months 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 11 months ago.
haven't tried either
Expert:  Gary replied 11 months 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 11 months ago.
both are correct
Expert:  Gary replied 11 months 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 11 months ago.
Customer: replied 11 months ago.
on that model does the computer have to be rebooted or whatever its called when you change the transmission out
Expert:  Gary replied 11 months 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 11 months ago.
i have been over and over this thing and everthing is correct as far as i can see
Expert:  Gary replied 11 months ago.

ok see if they relay clicks with your fingers

Customer: replied 11 months ago.
its clicking
Expert:  Gary replied 11 months 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 11 months 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 !