4L60 4L60E 4L65-E & 4L70-E Pinless Accumulator Piston Kit

mejoro la transmisión recomiendo su uso es fácil de instalar lo pude yo mismo y no soy mecánico

Im not saying my shift is 100% like new but it was a noticable difference. 95% shifts real smooth vs before 1% of the time if i let off the gas it shifted smooth. Theres also a great video on youtube on how to install it. Only like 15 miles so far will update if anything changes.

Not sure how or why, but this fixed the 1-2 Rough shift and 2-3 weak/sloppy shift in my 2003 Sierra 1500 with the 4L60e. It drives like a new truck. It will take a decent amount of experience to DIY this. I’m no transmission builder, but if you got some buddies and a hoist, it’s a breeze. Do lots of research on youtube on how to do the job before attempting. The trans pan must be dropped to do the job. Great product.

No issues and nice upgrade from stock plastic piston with the rod. I noticed slightly better shifting

After doing some research on the harsh 1-2 shift in my 2011 Silverado with a 4L60E trans, I found that this was a common upgrade and fix for the issue. It's very easy to install with basic mechanical skills. If you can do a transmission service, you can do this upgrade. (see YouTube for instructional videos). After installation, and trans service, the truck shifts smoothly, as it should. My only complaint about this product would be that it is shipped in a bag, but it should be in a box for a little more protection, as the piston is aluminum and if it gets dropped, it could definitely damage it. Mine had a small dent on it that you could tell was likely caused by a drop, or it hit something, but luckily it was in a spot on the piston that had no affect on it's performance.