Hello,
On the 4L60E transmission (4 speed) the input speed sensor is located in the pump stator housing, see pictures below. To access this sensor the transmission requires a strip down.
A good video:
https://youtu.be/dbVYrR1xoCc
On the 6L80E(6 speed) the speed sensors are located above the valve body
See image 3.
Hope this helps.
Cheers, Boris
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Thursday, October 13th, 2022 AT 8:37 AM