Four bench tools for a GM 4L60E overhaul: pump alignment band, low/reverse spring compressor, and turbine and stator shaft Teflon seal sizers.
This set is for the person doing a full 4L60E overhaul on the bench, whether the unit came out of a Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Yukon, Suburban, S10, Sonoma, Blazer, Camaro or Corvette. It handles four steps that are hard to do cleanly with hand tools: pulling and refitting the low/reverse return spring snap ring, sizing new Teflon rings on the turbine shaft, sizing new Teflon rings on the stator shaft, and pulling the front pump halves concentric before torquing. The tools are styled after the T-0151 compressor, the J-36418-C and ST-1503 seal installer/resizers and the T-1097 pump band, and the sizers are machined aluminum.
Think about the kit in the order you will pick each piece up.
GM service information describes the 4L60E pump as a 13-vane variable-displacement design, which means the rotor, vanes and slide all run in close clearances inside the two pump halves. A pump bolted up out of round is a common cause of a leaking pump bushing, a bound gear, or a pump that seizes after the first drive.
Before pulling the unit, it is worth knowing what failed so you buy the right hard parts along with the tools. A pressure gauge reading that is low in every range points toward the pump and regulator side; our pump rotor and bushing wear guide explains what to measure. Harsh or soft shifts with a pressure code can be electrical rather than mechanical, so read our 1-2 accumulator and shift feel guide before you commit to a teardown. Worn rear stator bushings are another known 4L60E wear point to inspect while the pump is apart.
Primary fit is the GM 4L60E. The listing also covers the 700R4, 4L60, 4L65E and 4L70E, and the pump band additionally fits the TH350, TH400, 3L80, 200-4R style and Powerglide pumps. The compressor is listed for the 700R4, 4L60, 4L60E, 4L65E, 4L70E and TH350 family. These are style-pattern tools, so if your unit has a non-standard shaft or a modified pump, check the sizer and band against your parts first. Not sure which unit you have? Send us the year and VIN and we will help match it. Everything we stock for this unit is on the 4L60E collection page.
For the rest of the rebuild, a 4L60E master rebuild kit supplies the new rings and seals these sizers are made for, and the master bushing driver set handles the pump, stator and case bushings. If you already own a compressor and only need the sizers, the standalone turbine and stator Teflon seal installer set is the lighter option.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
They are made in the style of those tools and do the same jobs. They are not the original branded tools, so check fit against your parts the first time you use them.
One sizer is for the turbine shaft rings in the input housing and the other is for the stator shaft rings on the pump cover. They are listed for 700R4, 4L60, 4L60E, 4L65E and 4L70E shafts.
Yes. The band is listed for the TH350, TH400, 3L80, 200-4R style and Powerglide pumps in addition to the 4L60E family.
It can be. A rolled or cut ring on the input side leaks apply oil. A line pressure test helps separate a seal leak from a pressure control problem before you pull it apart again.
A master rebuild kit for new rings, seals and gaskets, a bushing driver set if you are replacing the pump and stator bushings, and enough Dexron VI ATF for the refill.
