Corvette servo install

gmcman

Original poster
Member
Dec 12, 2011
4,656
Is it possible to pull the 2-3 shift servo without moving anything? Sure looks tight in there.
 

infamouz

Member
Dec 3, 2011
89
sorry dont have a answer for you question, just thought id also ask how do you know exactly wat kit you need or what servo would be recomended? Does the year matter, or brand? I saw some kits on ebay sounds like some really great product.
 

Regulator

Member
Nov 20, 2011
2,496
gmcman said:
Is it possible to pull the 2-3 shift servo without moving anything? Sure looks tight in there.

You have to drop the tranny a few inch's to be able to replace the servo. Have fun!
 

gmcman

Original poster
Member
Dec 12, 2011
4,656
Regulator said:
You have to drop the tranny a few inch's to be able to replace the servo. Have fun!

Could I remove the crossmember behind the transfer case and the driveshaft then lower the entire assembly or will the motor mounts not allow this? How much slack is in the cooling lines?
 

smitty5150

Member
Nov 18, 2011
1,069
Since its been done by other members on other sites, I would imagine it isn't too complicated. You*may not* have to drop or move anything big. If you do, you could always lift the body a few inches.
 

Black LT

Member
Dec 4, 2011
211
Here's a post I made on another forum.

Well, I put the vette servo in.
I saw the posts about how you have to lower the transmission a little so it will come out, so I decided to see if – by some miracle – mine would come out as is.
It didn’t, but it looked close. It hit where the underneath of the passenger floor starts to go up into the center hump. I thought – that’s just a bit of sheet metal in my way. Got a short length of 2x4 and a 3# mini sledge. Three whacks and presto – the servo came out. (I pulled the servo out till it hit - used a marker and marked the sheet metal - pushed the servo back in - then put the 2x4 on the mark and hit it)
Some may cringe at that but I really didn’t have to move it very much. Can’t even tell from inside. I’d do it that way again in a heartbeat. I went out to take a picture of how little it must be moved but can’t get a good shot of it with the heat shield back in place.
I should have taken pics along the way but I was doing it in my driveway with limited time and temps in the mid 20’s at times.

I’m not one to hide my oops’s!!
Doing the servo, everything went fairly well. Once I got the old one out I looked at the new parts and figured what I hadda do. It took a little remembering what went where and the worst thing was that big innermost snap ring. Wasn’t too bad getting it out, but had to talk to it a little putting it back in! Then put it all back in the trans but couldn’t get it to go in all the way – pried, talked, pried some more. Took it back out and looked in the servo opening and saw a spring that I didn’t know about – the one that goes on the shaft before you put it back in!! Then it fit.

The accumulator was a piece of cake.

The boost valve – grrrr.
Not too much trouble getting the snap ring and the old valve out. Went to put the new one in – I’m outside, it’s in the mid 20’s, and after dark. Put the 2 springs on it and slid it up in the hole – finagled around getting the snap ring on the pliers – pushed it up in – messed around a while and couldn’t get it to seat, figured I need a little long screwdriver to assist. Try 2 – pushed it in and got the ring on the pliers – twinggg – damn ring flying in the dark – SOB!! Flashlight looking through the tools, trans fluid, newspaper, and blood - found it – my cold fingers try again – no, I need a different angle. Try 4 – well, this thing won’t push up in like its supposed to. Pull it out and this round thing that I never saw before comes along out after the spring. Crap – it belongs waaayyyy up in the hole. It has a skinny disk about the diameter of the boost valve with a 2” shaft that has to fit through a series of little holes waaayyy up in there. I tried and I tried. I thought I was screwed and was going to have to pull the trans out to fix it. I finally got it started and wiggled and wiggled (the part) and it went in. I wished real hard, and it stayed up there until I got the other parts in, in my final ‘failure is not an option’ attempt!!
Oh, did I mention it was cold and I had an occasional drip of trans fluid – forehead, cheek, ear – just to keep it entertaining.

So it’s all together last night and I took it to work today for a test drive. I like.
The shifts are extremely fast and firm. And I don’t think I’m too concerned about any collateral damage.
They shift hard and fast but it isn’t banging gears like something is wrong – it’s nice. (and that’s coming from someone that’s too old for this stuff!!)

Hope my pain and suffering gave you a chuckle.
And if you’re thinking about it, I say – do it. (in a warm garage)
 

harveyfam2001

Member
Aug 24, 2012
42
I'm thinking about doing this in our 2002 Envoy. I have the kit from when we had an '07 Silverado but I never got around to installing it. Just to make sure I have all the parts from the kit I have both the inner housing with the red O-ring, the 2nd apply piston with the 2 O-rings, and the blue O-ring to replace the one on the servo cover. Am I missing anything from the kit?
 

harveyfam2001

Member
Aug 24, 2012
42
harveyfam2001 said:
I'm thinking about doing this in our 2002 Envoy. I have the kit from when we had an '07 Silverado but I never got around to installing it. Just to make sure I have all the parts from the kit I have both the inner housing with the red O-ring, the 2nd apply piston with the 2 O-rings, and the blue O-ring to replace the one on the servo cover. Am I missing anything from the kit?

I just now realized this thread most likely needs to be moved to the drivetrain forum.
 

Forum Statistics

Threads
23,272
Posts
637,478
Members
18,472
Latest member
MissCrutcher

Members Online