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2004 Chevy Trailblazer 150k trans had 1-2 shift delay. Just installed this and a couple of days drove local does make a difference. Not sure if it totally cured the delay but if made a positive difference as shifts are fine. To early to say it is absolute fix, but certainly worth a try. Easy to install, but would recommend watching YouTube to see how to install. While it was not a problem for me, I would recommend getting two of these and replacing the 3-4 accumulator which sits right on top of this. Wished I known that as it would only have taken maybe 10 more minutes to install. That accumulator sits on top of this and easy to install.
Verified purchase: Yes | Condition: New
I bought this item for a 4L 60 E transmission valve body repair I actually bought two of these I was able to get the first one and no problem but I wasn’t able to use the second one due to the fact that when putting the O-ring around the piston it’s fitment was sloppy at best I do not recommend these anyways I would just go with OEM shift accumulators
Verified purchase: Yes | Condition: New
My install was a little different, the accumulator had been replaced so I was not sure this is where my hard shifts were coming from. I also noticed that one of the springs was missing in my acc. however the thing that alarmed me was the extremely tight fit, with a seal and an o-ring it was difficult to seat the unit in the housing and I thought for sure this was wrong and not going to work properly. I was happy to find this unit helped my issue's of lurching on start up and hard shifting into first and second gear. Extremely happy with the outcome.
Verified purchase: Yes | Condition: New
Definitely recommend this product I would buy it again if I need it. Very simple to install and my pickup is also happy is doing so much better.
Verified purchase: Yes | Condition: New
Just like the title says, this is a must have upgrade for your 4l60e. I had been fighting a hard shift from 1-2 for almost a month now, and this fixed it. Also, you can hardly tell that it shifts from 1-2 when driving normally. It's as smooth as butter! 03 GMC 1500 has 200k+ miles and now the trans feels better than new. Also, I would recommend the Corvette servo upgrade as well. Also seems to help improve shifting and will extend the life of the bands and clutches. Easy install, takes maybe 5 minutes once you drop the pan.
Verified purchase: Yes | Condition: New
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