4L60E 4L65E 1996-06 1870 P1870 Code Correction Update Kit With TransGo SK4L60E This Shift Correction Kit from Superior will improve all 4L60E Transmissions from 1993-2006. THIS KIT WILL SOLVE AND CURE THE P1870 TCC FAULT CODE ON GM 4L60E AUTOMATIC TRANSMISSIONS. Items Included in this kit TRANSGO SK4L60E SHIFT KIT. TRANSGO 46-PLT-96 HEAVY DUTY VALVE BODY SEPARATOR PLATE (FITS 1996 THRU 2006 ONLY). 4L60E VALVE BODY GASKETS UPPER AND LOWER. (2) TWO SONNAX 77998-03K UPDATED PINLESS ACCUMULATOR PISTON KITS (1-2 & 3-4). SONNAX 77987-01K UPDATED PINLESS FORWARD ACCUMULATOR PISTON KIT (1) ONE NEW EPC NYLON SCREEN (SNAPS-ON VALVE BODY PLATE) (1) ONE NEW SHIFT SOLENOID NYLON SCREEN (SNAPS-ON VALVE BODY KIT) (1) ONE NEW BLUE SERVO COVER O'RING TRANSGO SK4L60E SHIFT KIT: THIS KIT IS A EASY FIX FOR BIG COMPLAINTS. CORRECTS, REDUCES, PREVENTS: CHECK ENGINE LIGHT BLINKING P1870 CODE BRUTAL 1-2 SHIFT CONVERTER SLIP SHUDDER BURNUP ERRATIC PUMP SLIDE BOUNCE THAT WEARS OUT PUMP AND VALVE BORES BUMP-BUMP 1-2 OR 2-3 SHIFT 3-4 CLUTCH AND 2ND BAND FAILURE REAR PLANET BURNUP BUSHING BURNUP THIS KIT COMES WITH A NEW UPDATED PWM BOOST VALVE. TRANSGO UPDATED VALVE BODY PLATE: NEW 4L60E TRANSGO UPDATED VALVE BODY SEPARATOR PLATE. THIS PLATE IS A IMPROVED DESIGN OVER O.E.M. FACTORY PLATES IT IS MADE OF TEMPERED STEEL FOR LONGER LIFE IS ZINC PLATED TO BE RUST PROOF. WILL FIT 1996 THRU 2006 TRANSMISSIONS ONLY! (2) SONNAX 1-2 AND 3-4 UPDATED PINLESS ACCUMULATORS: 4L60E / 4L65E Pinless accumulator piston. In 4L60-E units it is common for the plastic forward accumulator piston to wear or crack. This causes a fluid loss resulting is delayed engagement, slips, burned clutches and/or band. Repeated reciprocation of the accumulator piston causes the piston pin bore to wear. Fluid loss through the piston pin bore or cracks causes forward clutch to slip. The stock accumulator piston can develop a large pressure leak at the pin area over a period of 50 to 100 thousand miles (1) SONNAX FORWARD (IN THE VALVE BODY) UPDATED PINLESS ACCUMULATOR: 4L60E / 4L65E Pinless accumulator piston. In 4L60-E units it is common for the plastic forward accumulator piston to wear or crack. This causes a fluid loss resulting is delayed engagement, slips, burned clutches and/or band. Repeated reciprocation of the accumulator piston causes the piston pin bore to wear. Fluid loss through the piston pin bore or cracks causes forward clutch to slip. The stock accumulator piston can develop a large pressure leak at the pin area over a period of 50 to 100 thousand miles