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Gary
Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 16212
Experience:  GCM master tech over 25 years
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700r4 in a project. just installed with now TV cable

Customer Question

700r4 in a project. just installed with now TV cable adjusted properly but I get no shift into 3rd. It shifts 1 then 2 then goes to neutral until you slow enough for it to shift back down. Tranny was sitting on a shelf for a while. Possible stuck valve/servo or just rebuild it?
Submitted: 1 year ago.
Category: GMC
Expert:  Gary replied 1 year ago.

I am sorry for the long wait

the servo just allys the band which the only difference between 2nd and 3rd gear is the aplication of the 3-4 clutch pack

the odds are the 3-4 clutches will be worn or the 3-4 clutch piston or piston seal is nicked or stuck causing this issue

pull it down and go after the 3-4 clutches and 3-4 piston and piston seal