








🚗 Shift into High Gear with Confidence!
The High Performance Corvette Servo Piston Assembly is designed for GM 1982-2014 700R4, 4L60E, 4L65E, and 4L70E transmissions. Made from durable aluminum alloy, copper, and rubber, this assembly ensures a quick and reliable upgrade with enhanced torque capabilities and a complete pre-assembled kit for easy installation.





| Manufacturer | DearChan |
| Brand | DearChan |
| Model | Servo Piston |
| Item Weight | 1.81 pounds |
| Package Dimensions | 4.88 x 4.25 x 3.66 inches |
| Item model number | DC-700R4 |
| Exterior | Machined |
| Manufacturer Part Number | DC-700R4 |
| Special Features | Already assembled |
C**S
Excellent product!
Worked great and firmed up the shifts on 2004 Trailblazer w/4l65e
N**K
Shift harder and faster
Great product that I installed on my 03 Tahoe. I would say however that the black rubber gaskets did tear easily but other than that it was a smooth install. It really firms up my 1-2shift I still have to let off so it didn’t solve that problem but when I do let off it shifts immediately and hard. Better than the stock.
D**H
Awesome servo for my c10 LS swap
⭐⭐⭐⭐⭐ I recently upgraded my 4L60E transmission with a Corvette servo, and I can’t express how remarkable of a difference it has made! Initially, I was somewhat skeptical about how much an inexpensive part could enhance my driving experience, but it truly exceeded all my expectations. First off, the install was surprisingly straightforward. The instructions provided were clear, making even this DIY novice feel confident as I tackled the project. Once I had the servo in place, I noticed an immediate improvement in the shifting responsiveness. Gears engaged smoothly and without hesitation, which gave my driving an enhanced sportier feel. Performance-wise, my vehicle feels much more connected—like I’m truly in control rather than just along for the ride. The shift points are more precise and aggressive, especially during acceleration. There's a definite boost in confidence when making merges or quick lane changes, all thanks to the improved shift firmness. It's like turning my everyday drive into a mini racing experience! I cannot overlook how this mod brought life back into my transmission as well. The Corvette servo reduced the soft shifts that I used to experience, leading to less wear over time. I believe this will contribute to the longevity of the transmission, and that's always a bonus! Overall, this Corvette servo is a must-have for anyone looking to revive their 4L60E transmission. Not only is it an affordable upgrade, but the performance enhancement is like night and day. If you're throwing around the idea, trust me: just do it. You won’t regret it! Highly recommend!
K**S
Works fine. A challenge getting it secure.
Brand new and fit like advertised. It was a huge PITA trying to get the cover in far enough to insert the snap ring. Had to tap mine in with a ball peen hammer. I think its to get the o-ring past the snap ring lip. Once the cover is in far enough, it was a super easy to get the snap ring in and locked. Be sure to listen for the click of the snap ring seating. If you don't have it secure, the Servo will shoot out once you go from 1st to 2nd gear.
C**H
Gives a firm shift.
I definitely feel the difference in how my trans shifts. Comes with instructions.
T**J
Reuse your GM retaining ring.
Servo works great. Do not use the retaining ring provided. Reuse your factory GM ring. I’ve never had a failure until now, and this was the first time I didn’t use a GM retaining ring.
A**R
fits and works
works great no issues
C**.
New transmission installed with this and works great
It fit my 08 4l60e with no issues. For the people that say it dont fit in the opening if it's loose you'll leak fluid. Yes its a pain in ass take a big screw driver or a tire iron get it started by hand once your sure its aligned proper stick the bar between the floor and on the back of it and pry it in the biggest PIA is the retaining ring I didnt even use what came with it i used my old one. As far as feel a improvement well my granny wad cook before so dont really feel much diffeent. The only thing I had to do was remove the heat shield on side of trans ,didnt have to remove or drop anything and took about 15 minutes. On my 08 tahoe ltz.
A**R
Installed then went on road trip would not shift into second till a really high RPM then it slid in .Removed looked for a problem. Installed 3 more times same thing .Reinstalled my old one and it works fine. Six hours of messing around and plus I knocked the container over with trans fluid in it half way through . NOT REALLY Happy
A**Z
Excelente
Trustpilot
3 weeks ago
2 months ago