4l60e Transgo HD2, Corvette servo installed. First gear feels like second......

[Chris092183]

I just installed the servo with the blue spring from the 4l60ehd2 kit that go into the servo area. I didn't install the gold rings. It shifts alot better than before. It doesnt really shift hard it seems like it just shifts quicker. I'll be installing the shift kit tomorrow so hopefully everthing goes well. I am still unsure how many of the spacers/ washers I'm going to use for shift firmness. I read thta installing all 3 would damage the trans what do you guys think?

[beingblueeyes]

i installed none, what the washers do is adjust the psi (raise it) of the trans for that shift. that can be done vea the ecm (if you install washers to raise psi it will work for a bit until the trans "re tunes" its self and adjusts the psi back to stock/ecm spec's)

[liftedboost]

i JUST finished mine as well, 4l60e with the transgo hd2 and i have the same problem,1st feels like second. i only drove it maybe a mile, I havnt installed anything for the servo that came with the kit but i wanted to make sure everything else was good, sopposably it has a vette servo already installed , i will remove it this afternoon when it stops raining but if there is no vette servo would it cause this problem also?? like i said it feels like second or the ebrake is dragging , not trying to thread jack or anything just having the same issue.

[farmtruc]

Sounds the issue is with the shiftkit, not the servo.
Only thing you can do is pull it down, double check and hilight every step to ensure everything was followed exactly.
Check the gaskets while you're at it, not sure if that matters.

[99 lives]

Not tryin to jack a thread either but when I got my tranny back from my builder & installed it, it didn't shift into 4th. At all, no matter if I sped up to 90 or just cruised it at 60. This was the 3rd time my builder had built it & he'd already added the shift kit from Superior the 1st time & I never experienced any lagging in 1st & it always bit hard in 2nd & was nice & firm in 3rd & 4th.

This last time however, it wouldn't shift. After a latenight call on that Friday night, he came out Sat. AM & brought all replacement solenoids, harness, force motor, case/valvebody gaskets, 1/2 accumulator piston, 3/4 accumulator piston & various other odds & ends. I had the truck on stands & drained when he showed. We pulled the valvebody & seperator plate & cleaned them up. While I was doing some cleaning, he tested all the solenoids, force motor & the harness. He then checked through the V-body & began to compare the plate/gasket/V-body to each other when he noticed on the gasket between the plate & v-body, there wasn't a provision for a 32nd in. hole in one of the passages.

He'd swapped all the solenoids for good measure & installed new gaskets that actually had the provision for that hole & we put it all back together. It ran just as good as ever & shifted into 4th like a rocket. With Allen stating to check the gaskets is what prompted me to go on this rant. I couldn't actually tell you guys if all the other stuff we did to mine was relavent but I can't help but think that hole being blocked by that gasket had something, if not everything, to do with it not shifting. My trans guy couldn't confirm, nor deny that fact either, ha.

I'm jus sayin.... it never hurts to check everything. Good luck with your search & remedy man. I'm sure you guys will find it. Hopefully it will be something simple.

[liftedboost]

im gonna remove the pan and check it out, i ran the truck for a couple minutes in park and the check engine light came on .i dont know what the codes are but i know it wasnt on before the shift kit so maybe i left a solinoid disconnected or something..



***** removed the pan and saw one of the solinoids i think A was disconnected , i remember connecting it but maybe i hit it when i stalled the pan, shifts nice, just no kick from 1-2 ,i installed only one washer in the 1-2 accumulator and i havnt touched the servo yet? maybe this will stiffin it up a bit when i do it, it wont hurt anything if i didnt do the servo yet will it?

[Tank]

shouldn't, but go ahead and do it