{"product_id":"sure-cure-kit-sonnax-4l80e-4l85e","title":"Sure Cure Kit Sonnax 4L80E 4L85E","description":"\u003ch3\u003eSonnax Sure Cure Kit for 4L80E And 4L85E\u003c\/h3\u003e\n\u003cp\u003eRebuild with confidence and stop \"comebacks\" with the Sonnax Sure Cure Kit (SC-4L80E). The 4L80E is a heavy-duty powerhouse, but it suffers from specific internal pressure leaks that lead to burnt converters, \"neutral\" conditions, and solenoid codes. This kit is a comprehensive recalibration and repair package that targets the root causes of these failures, restoring the valve body to better-than-factory performance.\u003c\/p\u003e\n\u003cp\u003eWhether you are rebuilding for a high-torque towing rig, a diesel application, or a luxury performance vehicle like a Bentley or Rolls-Royce, the Sure Cure kit ensures your 4L80E maintains consistent line pressure and cooling flow under the toughest conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Problems Solved:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushing Walkout\u003c\/strong\u003e: Includes the critical stator support bushing to prevent internal movement that destroys the gear train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTCC Slip \u0026amp; Burnout\u003c\/strong\u003e: Features an upgraded TCC Regulator Valve kit to restore converter apply pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFL Valve Wear\u003c\/strong\u003e: Corrects Actuator Feed Limit (AFL) valve issues which cause \"wrong gear\" starts and solenoid performance codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase \u0026amp; Output Damage\u003c\/strong\u003e: Includes shims and washers to set proper end play and prevent internal \"pancaking.\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErratic Line Pressure\u003c\/strong\u003e: The included Boost Valve kit stops uncontrollable line rise and harsh shifting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStator Support Bushing\u003c\/li\u003e\n\u003cli\u003eO-Ringed End Plugs (Small, Medium x2, Large)\u003c\/li\u003e\n\u003cli\u003eBoost Valve Kit\u003c\/li\u003e\n\u003cli\u003eActuator Feed Limit Valve Kit\u003c\/li\u003e\n\u003cli\u003eTCC Regulator Valve Kit\u003c\/li\u003e\n\u003cli\u003e1-2 and 2-3 Shift Valve Springs\u003c\/li\u003e\n\u003cli\u003eCase Bushing\u003c\/li\u003e\n\u003cli\u003eEndplay Shim and Washer\u003c\/li\u003e\n\u003cli\u003eCheckballs (8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚡Pro Tip: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhen installing the Sure Cure kit, pay special attention to the \u003cstrong\u003eEnd Plugs\u003c\/strong\u003e. The kit includes O-ringed end plugs that replace the factory 'loose' versions. These seals are critical for stopping the small hydraulic leaks that eventually lead to burnt clutch packs. Always verify your check ball locations using the provided Sonnax map during reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTransmissions: \u003c\/strong\u003e 4L85E (MN8) 1991-UP, 4L80E (MT1) 1991-UP\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eVehicle\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eASTON MARTIN\u003c\/strong\u003e\u003cbr\u003eDB7 2000 4 SP RWD V6 3.2L\u003cbr\u003e\u003cstrong\u003eBENTLEY\u003c\/strong\u003e\u003cbr\u003eARNAGE 2002-2006 4 SP RWD V8 6.8L\u003cbr\u003e\u003cstrong\u003eCHEVROLET\u003c\/strong\u003e\u003cbr\u003eSUBURBAN 2500 1996-2007 4 SP R\/4WD V8 8.1L\u003cbr\u003eVAN FULL SIZE 2500 1996-2009 4 SP R\/4WD V6 4.3L V8 4.8L 5.7L 6.0L 7.4L 8.1L 6.5L 6.6L DIESEL\u003cbr\u003eVAN FULL SIZE 3500 1995-2009 4 SP RWD V6 4.3L V8 4.8L 5.7L 6.0L 7.4L 8.1L 6.5L 6.6L DIESEL\u003cbr\u003eC\/K, PICK-UP 1500, C\/K, PICK-UP 2500 1995-2000 4 SP R\/4WD V8 5.0L 5.3L 5.7L 6.0L 7.4L 6.5L DIESEL\u003cbr\u003eEXPRESS 2002-2016 4 SP RWD V8 4.8L 6.0L 6.6L\u003cbr\u003eSILVERADO 1500HD, SILVERADO 1500SS 1998-2007 4 SP R\/4WD V8 6.0L 6.5L\u003cbr\u003eSILVERADO 2500, SILVERADO 3500 2001-2007 4 SP R\/4WD V8 6.0L\u003cbr\u003eSILVERADO 2500HD 2001-2007 4 SP R\/4WD V8 6.0L\u003cbr\u003eSUBURBAN 1500 1995-2008 4 SP R\/4WD V8 6.0L 6.5L DIESEL 7.4L\u003cbr\u003eTAHOE 1995-2003 4 SP R\/4WD V8 6.0L 8.1L 6.5L DIESEL\u003cbr\u003e\u003cstrong\u003eISUZU\u003c\/strong\u003e\u003cbr\u003eTRUCK NPR, W4 1991-2008 4 SP RWD V8 5.7L 6.0L\u003cbr\u003e\u003cstrong\u003eJAGUAR\u003c\/strong\u003e\u003cbr\u003eXJ12\/XJR\/XJS 1994-1997 4 SP RWD L6 4.0L V12 6.0L\u003cbr\u003e\u003cstrong\u003eROLLS-ROYCE\u003c\/strong\u003e\u003cbr\u003eARNAGE\/SILVER SERAPH, Silver Seraph 2000-2003 4 SP RWD V8 6.8L\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlternate Words:\u003c\/strong\u003e Automatic Transmission, Reprogramming, Improvement , Correction, Shift , Valve Body Rebuild Kit\u003c\/p\u003e","brand":"SONNAX","offers":[{"title":"Default Title","offer_id":41914863288379,"sku":"SC-4L80E","price":150.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/1285\/8683\/files\/SC-4L80E-01.jpg?v=1733940011","url":"https:\/\/es-ve.suntransmissions.com\/products\/sure-cure-kit-sonnax-4l80e-4l85e","provider":"Sun Transmissions","version":"1.0","type":"link"}