700R4 Shift Kit 1988-93, new and ready to install. Fits the 700R4. Ships fast from the USA.
If your 1988-1993 Chevrolet or GMC truck, Suburban, Blazer, Camaro, Corvette or Caprice has a 700R4 (badged 4L60 in its final years) that slides into second, flares on the 2-3 or will not stay in overdrive, the cause is very often the throttle valve circuit rather than the gear train. This is a new TransGo SK 700-JR, the junior version of TransGo's 700R4 shift kit, built specifically for the second-design (type-2) valve body GM used from 1988 through 1993. It is a smaller, lower-cost kit because the late valve body already carries some of the changes the full kit has to add to early units.
Line pressure and shift timing in this transmission are set hydraulically. The TV cable moves the throttle valve, TV oil raises line pressure as throttle opens, and governor oil works against TV oil to time each upshift. A TV valve that sticks or a system that cannot hold adjustment leaves the band and clutches under-pressured, and the 2-4 band and 3-4 clutch pay for it. The JR kit installs TransGo's patented Bootstrap TV system with a No Stick TV valve, new TV valve springs, spacer and washer, then recalibrates the parts around it: two 1-2 accumulator springs and seat, the pressure regulator spring, three accumulator valve springs, three line bias valve springs, a servo cushion spring with a shim for band adjustment, and a plastic checkball.
Start with the fluid. Burnt-smelling, dark ATF or friction material in the pan means the band or 3-4 clutch is already damaged, and the kit belongs inside a rebuild. If the fluid is healthy, check that the TV cable pulls to full travel at wide-open throttle and releases cleanly with no binding at the bracket. A unit that upshifts into 4th and immediately drops back, or never gets there, is covered in our 700R4 won't shift into overdrive guide, and the valve body testing guide helps separate a hydraulic fault from worn clutches.
TransGo lists the SK 700-JR for 1988-1993 700R4 and 4L60 units with the type-2 valve body. It is not the right kit for a 1982-1987 type-1 valve body; those need the full SK 700, which TransGo says fits all years. It does not fit the electronic 4L60E that replaced the 700R4 in 1993 trucks. Because 700R4s get swapped between vehicles often, confirm what valve body is actually in the case, or send your year and VIN or the transmission ID tag before ordering. Other parts for this generation are on the 700R4 parts page.
| Fits | 700R4 1988-93 |
| 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.
The SK 700-JR is designed only for the 1988-1993 type-2 valve body and contains fewer parts. The full SK 700 targets the 1982-1987 type-1 body and also fits later units; TransGo says the JR achieves the same results on type-2 bodies.
Yes. TransGo states transmission removal is not required. The work is done through the pan with the valve body removed.
The JR parts list covers the TV valve and springs, accumulator, pressure regulator, line bias and servo cushion springs, a shim and a checkball. It does not list valve body gaskets, so have a gasket set and pan gasket on hand.
Not by itself. If the 3-4 clutch or 2-4 band is already burned, the kit prevents a repeat failure only when installed with new friction parts during a rebuild.
No. The kit fits the cable-controlled 700R4 and 4L60. The 4L60E uses an electronically controlled valve body with no TV cable.
