6T70 Shift Kit 2007, new and ready to install. Fits the 6T70. Ships fast from the USA.
The 2007 model year was the first for GM's 6T70/6T75 six-speed, so a launch-year 6T70 today is a high-mileage, first-production transaxle. The complaints that bring these in are predictable: a torque converter clutch that will not hold steady, late or harsh 3rd and 5th gear applies, a missing reverse, and a TEHCM full of pressure switch codes. This TransGo Gen 1 shift kit for the 2007 6T70 repairs the worn valve body circuits behind those problems and protects a freshly rebuilt unit from the pressure spikes that break parts.
Pressure in a 6T70 starts at the pressure regulator valve, passes through the actuator feed limit (AFL) valve that caps solenoid feed pressure, and is then metered to each clutch by the TEHCM solenoids. After many years of heat cycles, the AFL and regulator bores in an early valve body wear oval and leak, so the solenoids get unstable feed and line pressure wanders. The kit puts back a drop-in AFL bushing and valve, a new regulator valve and spring, and a check-ball relief bushing in the isolator bore that stops over-boost. TransGo's current Gen 1 version, the SK 6T70-A, adds a hardened TCC regulator valve with a scarf-cut sealing ring that seals in a worn bore, aimed at converter clutch hunting. Pressure switch diaphragms and grommets are included either way.
A first-year unit can have several faults at once, so sort them out first. Electrical solenoid faults are outside what this kit corrects. Pressure-related codes, TCC slip and flare complaints that remain with good wiring point to the valve body. Use our Equinox 6T70 shift problems guide for the 3rd/5th/reverse pattern and the harsh shift causes guide to tell valve body wear from a clutch that is binding.
This listing is for the 2007 6T70. The kit is a Gen 1 part, so it also covers later Gen 1 units through 2012 (see the 2007-2012 6T70 shift kit). It does not fit Gen 2 units without pressure switches. Early valve bodies are not all alike. TransGo's instructions show two isolator layouts and two TCC control valve castings, with and without a casting step, and the kit includes parts and directions for each. Read your transmission ID tag or RPO code to confirm a 6T70 rather than a 6T75 (the kit fits both), or send us your year and VIN. More early-unit parts are in our 6T70 parts collection.
Drop the pan and change the filter while you are in there; a 6T70/6T75 filter and pan gasket kit is the right companion part. Before removing the TCC control valve, look for the casting step, because it decides whether the new or original spring and retainer go back in. If your kit has the scarf-cut TCC regulator valve, chill the valve with the sizing O-ring for about 15 minutes so the ring sits flush, then slide it in cold without forcing it. Air test every pressure switch and replace diaphragms only where needed. Refill with Dexron VI and relearn adapts. A launch-year unit that already broke a wave plate usually needs the drum looked at too; the 2007 6T70 input drum is listed for that.
| Fits | 6T70 2007 |
| Part type | Shift Kit |
| Condition | New |
| Brand | TransGo |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, as long as it is a Gen 1 unit with pressure switches. TransGo's Gen 1 kit covers 2007 through the end of Gen 1 production. It does not fit Gen 2 units that have no pressure switches.
Only if the cause is hydraulic. GM's bulletin for that pattern points at the 3-5-R clutch circuit, so inspect the 3-5-R wave plate and clutches. If they are broken or burned, they need replacing along with the valve body repair.
Both are TransGo Gen 1 kits. The later SK 6T70-A adds a hardened TCC regulator valve with a scarf-cut sealing ring to seal a worn bore, which targets converter clutch hunting. The core regulator, AFL, relief and pressure switch parts are shared.
TransGo states no special tools are required. You need a clean bench, a rubber-tip blow gun and a flat washer for the 30 psi pressure switch test, a freezer for the scarf-ring sizing step if your kit has it, and a scan tool for the adapt relearn.
Dexron VI ATF. Use new fluid after the valve body service, because old fluid carries debris that can wear the new valves.
