Transmission issue 4L60e

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jfkelley

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Oklahoma City
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John
Truck Year
1976
Truck Model
K10
Engine Size
350
1977 K10 4x4 , LM7/4L60e/ NP241c ..Received a call from my tuner..The transmission was acting really odd. It would go for a bit then go into neutral and not move forward or back. Topped fluid off before tuning. Not sure if we have a sensor miscommunication or what. Going to scan it today and see if I can come up with some idea…Anyone ever had this issue ..
 

TotalyHucked

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Zach
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1985
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Sierra 1500
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5.3
First thing's first, check that the plug is seated correctly. When I first put mine together, I actually had it plugged in backwards. You're supposedly not able to do it but I did lol. Then check grounds. Those would be my first 2 things to do.
 

NickTransmissions

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1987
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R10
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1977 K10 4x4 , LM7/4L60e/ NP241c ..Received a call from my tuner..The transmission was acting really odd. It would go for a bit then go into neutral and not move forward or back. Topped fluid off before tuning. Not sure if we have a sensor miscommunication or what. Going to scan it today and see if I can come up with some idea…Anyone ever had this issue ..
Has it been previously functioning normally or are have you and him just installed everything and now having problems? Is the transmission freshky rebuilt or is it used?
 

jfkelley

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Joined
Apr 14, 2019
Posts
65
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Location
Oklahoma City
First Name
John
Truck Year
1976
Truck Model
K10
Engine Size
350
I drive the donor truck it came out of never had any problems with it until now
 

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