4L60E Shift Kit 1993, new and ready to install. Fits the 4L60E. Ships fast from the USA.
1993 was the first model year for the 4L60E, the electronic version of the 700R4 that went behind the small-block in the Chevrolet C/K 1500, Tahoe, Suburban, Blazer, S10 and Camaro and the matching GMC trucks. Thirty-plus years on, a 1993 unit that has been rebuilt once already usually comes back with the same complaints: a lazy 1-2 that flares, a slide into 3rd, and a 3-4 clutch pack that cooks the first time the truck tows. This listing is a TransGo kit for that first-year transmission. The photo shows TransGo's Reprogramming Kit packaging with the valve body gaskets and calibration hardware, which is TransGo's heavier recalibration rather than its basic shift kit.
The 4L60E picks gears with two on/off shift solenoids and sets line pressure with a pressure control solenoid, but the solenoids only decide when a shift happens. How quickly the 2-4 band and the 3-4 clutch actually clamp is decided by the accumulators, springs and feed orifices in the valve body, and GM tuned those for a soft feel. A soft shift is a long slip, and slip is heat. TransGo's reprogramming kits for this family recalibrate the whole accumulation system along with the clutch and band feed orifices and pair that with a firmer line pressure curve, so each apply is short and complete. They also replace the converter clutch regulator and isolator valves with longer-land valves that ride on unworn parts of the bore.
The year matters here. Sonnax notes that before GM moved to pulse width modulated converter clutch control in the mid-1990s, 4L60E lockup was simple on/off. A 1993 transmission is one of those early on/off units, so match any replacement TCC solenoid or converter work to the early design. Note also that TransGo lists its most aggressive 4L60E-PRO kit only from 1996 up, so for a 1993 the reprogramming option is the HD2 line, which TransGo lists for 1993-2015.
A kit corrects calibration on a healthy transmission. It will not bring back a burnt 3-4 pack or a stripped sun shell, and if the truck has lost 3rd and 4th entirely that is a rebuild, not a valve body job. Pull the codes, check the fluid smell and level, and look in the pan for friction material. Our 4L60E common problems guide walks through separating mechanical failures from calibration issues, and the 1-2 accumulator and shift feel guide covers the circuit this kit reworks.
This listing is for 1993 4L60E transmissions. Early units differ from later ones in converter clutch control and in valve body and separator plate details, so check the transmission ID tag on the case and compare your plate to the kit instructions before drilling anything. If your transmission has been swapped or you are not sure of its year, send us the year and VIN and we will confirm it. The rest of the early-year parts, including other shift kit options, are in our 4L60E parts collection, and a lighter option is the TransGo SK 4L60E shift kit.
TransGo states the valve body portion can be installed with the transmission in the vehicle on 1993-2006 units, which covers a 1993. The 3-4 clutch return spring portion of the HD2 needs the transmission out, so most builders do the whole kit during a rebuild. Lay out every valve and spring in order as it comes out, use the supplied drill bits only where the sheet says, and fit new valve body and pan gaskets. If the frictions are tired, install the kit with a 1993-96 rebuild kit, and test the pressure control solenoid while the valve body is off, since a weak one undoes the new pressure curve. Fill with Dexron VI and set the level hot.
| Fits | 4L60E 1993 |
| 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.
This listing is for the 1993 model year. TransGo builds the reprogramming kit to cover a wider range, but early units have their own TCC and separator plate details, so confirm against your transmission tag or send us your year and VIN.
TransGo lists the PRO for 1996-2018 transmissions and says it does not fit 1993-1995 units. A 1993 uses the HD2 reprogramming kit instead.
The valve body work can be done in the vehicle on a 1993. The 3-4 clutch return springs need the transmission out, so for the full benefit plan it as part of a rebuild.
No. Slipping in 3rd and 4th usually means the 3-4 clutches are already burnt. Replace them, then install the kit so the new clutches are protected.
TransGo lists Gear Command for 1993-2008 units, so a 1993 is inside that range when the HD2 kit is installed per the instructions.
Dexron VI ATF. Fill, start the engine, run it through the gears and check the level hot in park.
