HELP Transmission

[Chevy2005]

I have a strange issue when the truck will try to downshift to second and will go into a false neutral and then jump into gear and go into limp mode. I have got a "second gear incorrect ratio" code and a P0776. Is the transmission ruined? or do I just need a valve body

 

[Chevy2005]

Bump. i need a quick answer i found a kit but am heisatent to buy it

 

[PureHybrid]

Downshifting under power? I doubt the transmission is bad, p0776 can be bad if somethings broke, but if its still drives after clearing codes likely vb related

 

[Chevy2005]

I think i just lost 4th gear. it will limp randomly and acts like the c2 could be bad. i suspect the valve body caused a tie up and broke my c2

 

[Chevy2005]

im not easy on this poor truck either and its gotten progressively worse over the last week and every time it limps it has a P0732 code

 

[PureHybrid]

I'm not saying something broken is impossible, but check wiring and solenoids before ripping the whole thing out. Does it shift fine under light throttle? Stock transmission? Built? What parts?

 

[Chevy2005]

im not sure what kit it has, previous owner claimed it had a ppe stg 5 but I'm way below the hp limit of that and having problems

 

[Ron Nielson]

See the attachments, follow the decision tree.

 

[Chevy2005]

Well the transmission was bad, on my way home last night I lost forth gear entirely