{"product_id":"transgo-hd2-valve-body-shift-kit-for-4l80e-transmissions","title":"TRANSGO HD2 Valve Body Shift Kit for 4L80e Transmissions","description":"\u003cp\u003eThe 4L80E Performance Reprogramming Kit fits 1991 to 2013 General Motors vehicles equipped with 4L80E and 4L85E automatic transmissions.  Common complaints on these transmissions are no upshifts, soft 2-3 shifts, burnt direct frictions, broken hard parts as well as gear ratio and solenoid performance codes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe boost valve assembly is notorious for wear causing both low pressure as well as runaway boost pressure. With the low boost pressure problem, the resulting complaints are a soft 2-3 shift, direct clutch failure as well as the gear ratio and solenoid performance codes. On the other hand, the runaway boost pressure problem can result in a costly broken case, direct drum and piston failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures and benefits:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe TransGo 4L80E Performance Reprogramming Kit includes valve body, pump and internal components that are calibrated to work in concert with an elevated line pressure curve that will greatly improve the overall durability and shift feel of the transmission. Also, the laminated triple separator plate provides dual feed for the 3\u003csup\u003erd\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003egear clutch without having to dismantle the transmission. Dual feeding the 3\u003csup\u003erd\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003egear clutch triples the torque capacity of the 3\u003csup\u003erd\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003egear clutch which is the Achilles heel of this transmission. In addition, the included highly improved wide land design boost valve and bushing resists wear so that pressure regulation functions consistently for the long haul. Lastly, the EPC boost pressure relief valve system provided helps protect against accidental runaway boost pressure to stop the case and direct drum failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCorrects\/Prevents\/Reduces:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHigh pressure parts breakage\u003c\/li\u003e\n\u003cli\u003eSoft 2-3 shift\u003c\/li\u003e\n\u003cli\u003eBurnt direct clutch\u003c\/li\u003e\n\u003cli\u003eSlow 3-2 downshift\u003c\/li\u003e\n\u003cli\u003eNo upshifts\u003c\/li\u003e\n\u003cli\u003eHarsh 1-2 shift\u003c\/li\u003e\n\u003cli\u003eLow pressure due to solenoid filter breakup\u003c\/li\u003e\n\u003cli\u003eCodes 39, 68, 85, 86, 87, P0731, P0732, P0733, P0734, P0751, P0756, P0894 and P1870\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy duty intermediate case snap ring\u003c\/li\u003e\n\u003cli\u003e(2) Accumulator valve springs, end plug and O-ring\u003c\/li\u003e\n\u003cli\u003eActuator filter tapered plug, O-ring, spring and end plug\u003c\/li\u003e\n\u003cli\u003eRelief valve system plate, valve, spring, e-clip and nuts\u003c\/li\u003e\n\u003cli\u003eLaminated triple separator plate\u003c\/li\u003e\n\u003cli\u003eValve body and accumulator body gaskets\u003c\/li\u003e\n\u003cli\u003e(2) Drill bits\u003c\/li\u003e\n\u003cli\u003e3\u003csup\u003erd\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eaccumulator spring\u003c\/li\u003e\n\u003cli\u003eUSA-made hardened boost valve and bushing\u003c\/li\u003e\n\u003cli\u003ePressure regulator valve spacer, washer, springs and snap ring\u003c\/li\u003e\n\u003cli\u003eNew stronger 4\u003csup\u003eth\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003efeed bolt and washer\u003c\/li\u003e\n\u003cli\u003e1-2 accumulator spring\u003c\/li\u003e\n\u003cli\u003e(16) Direct clutch return springs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TRANSGO","offers":[{"title":"Default Title","offer_id":46114691875014,"sku":"4L80E-HD2","price":184.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/transgo-transgo-hd2-valve-body-shift-kit-for-4l80e-transmissions-1250727815.webp?v=1784758273","url":"https:\/\/www.glennsautoperformance.com\/products\/transgo-hd2-valve-body-shift-kit-for-4l80e-transmissions","provider":"Glenn's Auto Performance","version":"1.0","type":"link"}