a friend of mine has an 07 gmc 1500 with a 4L60E transmission and his transmission is shifting hard, took it by advanced and got the codes read, he said the turbine speed sensor was bad. does anyone know where i can find a diagram of the transmission or a DIY or directions to changing this sensor? and is this something that can be done by someone with some mechcanical knowledge or does it need to be done by a transmission shop or the dealership?
Thanks, Paul

Send a PM to Mike L on here. That is his username. If not goto fullsizechevy.com and ask over there as they tend to be more 1/2 ton guys.

ok thanks so much

Send a PM to Mike L on here. That is his username. If not goto fullsizechevy.com and ask over there as they tend to be more 1/2 ton guys.
his name is just Mike L cause I tried to send a PM and I didnt find that name, it came up with lots of other Mike L somethings

Add a period (.) to L.

Mike L.

ok thanks

it should be covered under the 5yr/100k powertrain--take it to the dealer...