CJ Classic Trucks TransGo 4L60E-PRO Shift Reprogramming Kit Chevy/GMC C/K 1998

This 4L60E-PRO reprogramming kit fits 1998 C/K trucks with a 4L60E, 4L65E, and 4L70E automatic transmission. This kit is a solution for TCC slip, harsh shifts, and inconsistent pressure. It optimizes torque capacity and shift performance, giving you short and firm shifts. It features a re-engineered valve body, servo, pump, and accumulator components calibrated for high RPMs and pressures. The TCC isolator and regulator valves have extended lands for enhanced circuit integrity.

Features and Benefits:
- Reduces TCC slip or shudder issues
- Addresses error codes P1870 and P0894
- Results in consistently firm and short shifts
- Hedge against double bump and harsh 1-2 and 2-3 shifts
- Prevents 2-3 flare up and burnt 3-4 clutch plates
- Bolsters 2-4 band reliability and reduces pump/valve bore wear

This kit incorporates a piston return spring kit to mitigate clutch apply issues at higher RPMs, unbreakable pump vane rings to eliminate pump ring failure, and an optional "Gear Command" feature* for specified models. This enables manual downshifts at any speed and holding gears to any engine speed. Installation is straightforward for models without the input speed sensor.

*Optional Gear Command holds manual 1st, 2nd and 3rd to any engine RPM and downshift to the gear selected at any speed.

Kit Includes:
- 1-2 accumulator piston, seal, springs and spacers
- Actuator feed limit valve spring
- 1-2 accumulator valve spring
- Hardened steel 1-2 shift valve and spacer
- Low valve spring
- Hardened steel TCC regulator and isolator valve, spring, spacer & install bolt
- Divider plug, installation bolt and 3-2 downshift valve spring
- Hardened steel pressure regulator valve, springs, spring seat, spacer & snap ring
- 0.500" EPC boost valve and bushing
- Pre-calibrated valve body separator plate and gaskets
- Slug for valve body separator plate, shift solenoid screen, EPC screen & wire spacer
- (x3) Drill bits
- 3-4 accumulator spring
- 093 Corvette-type second servo piston, housing, sealing rings, spring, shims & servo cover O-rings
- 3-4 clutch return springs
- 3-4 clutch orifice capsule
- Forward clutch return springs and installation washer
- Pan gasket
- (x2) Unbreakable pump vane rings and high-rev pump priming spring

Vehicle Fitment:
- 1998 Chevy/GMC C/K Truck

Please Note: This kit is NOT compatible with 1993-1995 models, 2005 Corvettes, or Hybrid applications.