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  1. #1
    Teh General Ginger's Avatar
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    Default 4l60e vette servo install

    Quote Originally Posted by kevindepot View Post
    If you’re looking for a hair, teeth and eyeballs splattered all over the windshield shift. Go buy a shift kit because this won’t do that. But if you want a little firmer shift and more holding power, then keep reading.
    I figured that if you had all the proper trans tools i.e. Servo compressor. Then you should already know how to do this mod. So I did it with just basic hand tools. I even tossed in some Redneck tools for you in the South. j/k.
    Start by getting all you’re together.
    1. Floor jack
    2. jack stands
    3. 10 mm socket (1/4” drive) not for all models
    4. 2 flat head screw drivers. 1 large and 1 small
    5. couple of rags
    6. drip pan. I used a 1-gallon milk jug with the top cut off.
    7. Pliers.
    8. Plastic screw top to a coke bottle
    9. “C” clamp.

    Start by jacking up and supporting your truck with jack stands. Remember, safety 1st. You can’t enjoy your new mods if you’re dead!
    All 700-R4s and 4L60s servos are on the passenger side. Crank your wheel to the left for a little added working room.
    On my truck I had a heat shield between the trans and cat bolted to the trans with 2 bolts. Use your 10 mm to remove these bolts then remove the heat shield.

    Now you should be able to access the servo cover. Using your large screwdriver. Wedge the handle between the servo cover and the trans hump on the floor pan. Grab the blade of the screwdriver and pry the servo cover into the trans. It should go in about a 1/8th of an inch or so. I was able to cram the blade against the exhaust to hold it into place. That way I had 2 hands to work with.
    Now you can remove the servo cover snap ring. The trans housing has 2 notches cut into it. The snap ring is exposed in these notches and is easy to get to.
    Pull the “O” ring up thru the notch and cut it. Now remove the “O” ring.
    Now you can remove the cover.

    Remove the 4th apply piston. It’s the 1st thing behind the cover.

    Now comes the tricky part. With my truck I didn’t have enough room to remove the whole servo assy. So I had to remove 1 part at a time. It’s not that hard. But would be a hell of a lot easier if I had the assy. on the bench to take apart.
    If you have enough room to remove the whole thing then skip the next few steps. Read them anyway just because I took the time to type them so humor me.
    Remove the “E” clip, washer and spring from the apply pin. When removing the “E” clip, cover this thing with your free hand. If it fly’s, Your in trouble. My guess is that your local auto parts store is quite a walk away.

    With that out of the way. You can now remove the inner housing and 2nd apply piston. Inside the 2nd apply piston is your 2nd apply cushion spring and spring retainer they are held in by a snap ring.


    The last part is the Servo return spring. It should just fall out. No big deal.
    Now, with everything out. It’s time to remove the piston snap ring. Take your “C” clamp and compress the piston assy. Using a small flat screwdriver. Remove the snap ring.

    Now is the time to clean your parts.
    The servo I received (off E-bay for $13.00 + $4.00 shipping). Came with:
    1 servo inner housing
    1 2nd apply piston
    2 split seals
    2 “O” rings. 1 for the inner housing and 1 for the cover.
    Old parts on the left. New on the right. Note the larger apply surface (outside ring on the bottom parts)


    OK let’s put this bitch back together. Start with the new 2nd piston, spring and retainer. Here is where the coke top comes in. put it in the piston (not the side the spring goes in).

    This will protect the hole that the shaft goes thru. Install the spring and cover. Compress it with the “C” clamp and install the snap ring.


    Now install the new split inner and outer seals. Oil the out of them with some clean trans fluid.
    Now reinstall your apply pin into the piston. Install the return spring and install this whole assy. Back into the trans.

    Install the pin spring, washer and “E” clip. This step was a pain in the ass. Just take your time. If it starts to piss you off. Walk away and take a break.
    Install the inner housing and then 4th apply piston.
    Install your new cover “O” ring and install your cover. Press the cover in the same way that you removed it and install the cover snap ring.
    Congratulations, You’re done!


    here is the link to GMFS's servo install thread


    http://www.gmfullsize.com/forum/showthread.php?t=1159


    overall its real easy, just make sure you asemble it with plenty of lube, that the parts are all in order, and that the snap ring is fully seated when complete

  2. #2
    Newbie CLB BLZR's Avatar
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    Default

    does this vette servo work for push button 4x4 4l60e trans? and where can i locate one

  3. #3
    I'm Awesome
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    it should work, i would think the only difference between 2wd and 4wd would be the transfer case added to the rear of the trans.....

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    I'm Awesome Z71Sierra's Avatar
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    Can you educate me a bit more on what it does?
    1994 GMC Suburban 4x2 5.7 TBI "NInja Burb"
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    1994 GMC Sierra ECSB 4x4 5.7 TBI "Rum Bumbly" SOLD
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    "If gun owners are as violent as anti-gunners said we are, there wouldn't be any anti's left."

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    I'm Awesome rhino's Avatar
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    The servo applies the band which is applied in 2nd and 4th gear. The vette servo has a little more holding power on those two gears. Firms the shifts a little also. They make a Billet servo that is bada.. They aren't cheap, but we put them on all the high HP units and heavy duty trucks. The vette servo you can get at any local transmission supply house, or online. They are less that 10 bucks.

  6. #6
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    These two youtube videos will help anyone who has doubts about how to do this.

    4l60e Servo Removal:
    http://www.youtube.com/watch?v=4WpjG...feature=relmfu

    4l60e Servo Rebuild:
    http://www.youtube.com/watch?v=YfPgB...feature=relmfu

    If someone would like to embed the videos, you are more than welcome to. GL

  7. #7
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    local tranny shops says that it will slam you with a vette servo and a sonnax overdrive servo. i cant have it to rough my girl gets car sick but i wnat to help my tranny last as long as possible so how much of kick is it really?

  8. #8
    Fightin' Texas Aggie am92's Avatar
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    The vette servo isn't really that firm at all. A little firmer than stock, but definitely not slam your head into the seat firm. I'd say it's a good cheap mod. Love your name by the way. I'm class of 2014 A A A WHOOP!!!
    -Andrew

    2012 Silverado 4x4 - Stock...
    1998 ECSB Z71 "Elsie" - RIP 8/30/13 - 3" Body Lift, 14 bolt sf, shorty headers, jegs offroad mid-pipe, magnaflow duals with h-pipe, Scorpion 1.6 Roller Rockers, Vette Servo, Sonnax billet 4th servo, custom built rear bumper, 2 10" subs under back seat
    Quote Originally Posted by Mean Green View Post
    Nowadays Chrome is ugly, black is cool, rubber band tires are the bestest, facebook is gospel, "custom" is adding a spoiler, and all gun owners are all rednecks.

  9. #9
    GEAR HEAD silverado13's Avatar
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    Quote Originally Posted by Ginger View Post
    here is the link to GMFS's servo install thread


    http://www.gmfullsize.com/forum/showthread.php?t=1159


    overall its real easy, just make sure you asemble it with plenty of lube, that the parts are all in order, and that the snap ring is fully seated when complete
    i have been having an extra vette servo sitting around for a while now and hadnt put it in this transmission since i rebuilt it and went to install it today because i was also upgrading the tcc lock up solenoid and the 1-2 accumulator spring, so i figured id install it while i was there but i was short on time before dark becasue i started late, anyways im going to remove the front section of the exhaust when i try again because i just was a little to cramped, but its ironic that i just read this thread today

    -1997 k1500 ,ECSB, 350, built 4l60e with 2000 stall, air raid CAI, ported MAF sensor, ported throttle body, magnaflow catback with moroso spiral flow mufflers, flowtech shorty headers, escalade 3.73 rear end, underdrive crank pulley, overdrive alternator pulley, 411 swap with a custum tune, electric fan conversion, hypertech power programmer, viper push button starter, caddy cluster, 6000k HID hi/low conversion kit, blue interior LEDs-galore
    -2000 Silverado 1500 Z71 completely stock

  10. #10
    Newbie BubbaZ71Tahoe's Avatar
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    does the 4th servo let the TC hold better in 4th?

    i am thinking about doing the vette servo and billet 4th
    97 Tahoe 4x4, Wheatley93,6 inch Superlift 3 inch body, 4.88s, 14bff with Detroit Locker, 38.5/15/15 boggers SOLD
    97 2 door Tahoe, all stock for now.
    2002 F-250 7.3PSD FX4,60/10.5, DIY Tymar,3.5 exhuast

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