{"product_id":"tier-one-allison-1000-high-pressure-valve-body-todt1-a1000-avb-0103-2001-2003-gm-2500-3500-lb7","title":"Tier One Allison 1000 High-Pressure Valve Body TODT1-A1000-AVB-0103 | 2001-2003 Duramax 6.6L LB7","description":"\u003ch1 data-section-id=\"1y5zww9\" data-start=\"280\" data-end=\"337\"\u003eAllison 1000 Valve Body Upgrade for 2001–2003 Duramax\u003c\/h1\u003e\n\u003ch2 data-section-id=\"1q7scm2\" data-start=\"338\" data-end=\"399\"\u003eTier One High-Pressure Allison Valve Body (1000+ HP Rated)\u003c\/h2\u003e\n\u003cp data-start=\"401\" data-end=\"684\"\u003eLooking for the \u003cstrong data-start=\"417\" data-end=\"484\"\u003ebest Allison 1000 valve body upgrade for your 2001–2003 Duramax\u003c\/strong\u003e? The \u003cstrong data-start=\"490\" data-end=\"540\"\u003eTier One High-Pressure Allison 1000 Valve Body\u003c\/strong\u003e is engineered to improve shift performance, increase transmission line pressure, and support \u003cstrong data-start=\"634\" data-end=\"683\"\u003eDuramax builds producing over 1000 horsepower\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"686\" data-end=\"1094\"\u003eDesigned as a \u003cstrong data-start=\"700\" data-end=\"762\"\u003edirect replacement for the factory Allison 1000 valve body\u003c\/strong\u003e, this upgraded unit corrects common transmission issues while delivering firmer, faster, and more consistent shifts. Whether your truck is used for \u003cstrong data-start=\"911\" data-end=\"992\"\u003eheavy towing, high-performance street driving, or a fully built Duramax setup\u003c\/strong\u003e, this valve body upgrade helps your Allison transmission handle the additional power with confidence.\u003c\/p\u003e\n\u003cp data-start=\"1096\" data-end=\"1268\"\u003eEvery valve body is \u003cstrong data-start=\"1116\" data-end=\"1208\"\u003eprofessionally assembled, upgraded with performance components, and dyno-tested in-house\u003c\/strong\u003e before shipping to ensure proper operation and reliability.\u003c\/p\u003e\n\u003chr data-start=\"1270\" data-end=\"1273\"\u003e\n\u003ch1 data-section-id=\"7hvvyr\" data-start=\"1275\" data-end=\"1333\"\u003eWhy Upgrade the Allison 1000 Valve Body on Your Duramax?\u003c\/h1\u003e\n\u003cp data-start=\"1335\" data-end=\"1533\"\u003eThe \u003cstrong data-start=\"1339\" data-end=\"1368\"\u003eAllison 1000 transmission\u003c\/strong\u003e is known for its durability, but once horsepower and torque levels increase, the factory valve body can struggle to maintain proper line pressure and shift control.\u003c\/p\u003e\n\u003cp data-start=\"1535\" data-end=\"1671\"\u003eA \u003cstrong data-start=\"1537\" data-end=\"1581\"\u003ehigh-pressure Allison valve body upgrade\u003c\/strong\u003e helps eliminate these limitations by improving the hydraulic control of the transmission.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1fsfevn\" data-start=\"1673\" data-end=\"1724\"\u003eBenefits of an Upgraded Allison 1000 Valve Body\u003c\/h3\u003e\n\u003cul data-start=\"1726\" data-end=\"2015\"\u003e\n\u003cli data-section-id=\"pb1tkg\" data-start=\"1726\" data-end=\"1778\"\u003e\n\u003cp data-start=\"1728\" data-end=\"1778\"\u003eIncreased \u003cstrong data-start=\"1738\" data-end=\"1778\"\u003etransmission line pressure stability\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"w95lue\" data-start=\"1779\" data-end=\"1819\"\u003e\n\u003cp data-start=\"1781\" data-end=\"1819\"\u003eImproved \u003cstrong data-start=\"1790\" data-end=\"1819\"\u003eshift timing and firmness\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"pzwqk9\" data-start=\"1820\" data-end=\"1869\"\u003e\n\u003cp data-start=\"1822\" data-end=\"1869\"\u003eStronger \u003cstrong data-start=\"1831\" data-end=\"1869\"\u003eclutch engagement under heavy load\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zqkzx3\" data-start=\"1870\" data-end=\"1918\"\u003e\n\u003cp data-start=\"1872\" data-end=\"1918\"\u003eReduced risk of \u003cstrong data-start=\"1888\" data-end=\"1918\"\u003etransmission slip or flare\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1u649jo\" data-start=\"1919\" data-end=\"1960\"\u003e\n\u003cp data-start=\"1921\" data-end=\"1960\"\u003eImproved \u003cstrong data-start=\"1930\" data-end=\"1960\"\u003eDuramax towing performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"kmmeus\" data-start=\"1961\" data-end=\"2015\"\u003e\n\u003cp data-start=\"1963\" data-end=\"2015\"\u003eIncreased reliability for \u003cstrong data-start=\"1989\" data-end=\"2015\"\u003ehigh horsepower builds\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2017\" data-end=\"2237\"\u003eIf your truck has \u003cstrong data-start=\"2035\" data-end=\"2132\"\u003eperformance tuning, larger turbochargers, upgraded injectors, or a built Allison transmission\u003c\/strong\u003e, upgrading the valve body is one of the most effective ways to improve overall transmission performance.\u003c\/p\u003e\n\u003chr data-start=\"2239\" data-end=\"2242\"\u003e\n\u003ch1 data-section-id=\"1cozroq\" data-start=\"2244\" data-end=\"2301\"\u003eTier One High-Pressure Allison 1000 Valve Body Features\u003c\/h1\u003e\n\u003cul data-start=\"2303\" data-end=\"2976\"\u003e\n\u003cli data-section-id=\"1hic3vg\" data-start=\"2303\" data-end=\"2350\"\u003e\n\u003cp data-start=\"2305\" data-end=\"2350\"\u003eComplete \u003cstrong data-start=\"2314\" data-end=\"2350\"\u003eAllison 1000 valve body assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"mv20ju\" data-start=\"2351\" data-end=\"2408\"\u003e\n\u003cp data-start=\"2353\" data-end=\"2408\"\u003eDesigned to support \u003cstrong data-start=\"2373\" data-end=\"2408\"\u003e1000+ horsepower Duramax builds\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"heye8j\" data-start=\"2409\" data-end=\"2484\"\u003e\n\u003cp data-start=\"2411\" data-end=\"2484\"\u003eHandles \u003cstrong data-start=\"2419\" data-end=\"2484\"\u003ehigher transmission line pressure than the factory valve body\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1a1kn79\" data-start=\"2485\" data-end=\"2521\"\u003e\n\u003cp data-start=\"2487\" data-end=\"2521\"\u003eIncludes \u003cstrong data-start=\"2496\" data-end=\"2521\"\u003eTransGo Jr. shift kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"5qcfrx\" data-start=\"2522\" data-end=\"2573\"\u003e\n\u003cp data-start=\"2524\" data-end=\"2573\"\u003eEquipped with \u003cstrong data-start=\"2538\" data-end=\"2573\"\u003enew Trim A and Trim B solenoids\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fhvm4h\" data-start=\"2574\" data-end=\"2621\"\u003e\n\u003cp data-start=\"2576\" data-end=\"2621\"\u003eIncludes \u003cstrong data-start=\"2585\" data-end=\"2621\"\u003enew OEM pressure switch manifold\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"b5pt3c\" data-start=\"2622\" data-end=\"2681\"\u003e\n\u003cp data-start=\"2624\" data-end=\"2681\"\u003eProvides \u003cstrong data-start=\"2633\" data-end=\"2681\"\u003efirm, quick, and precise transmission shifts\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vlmy5e\" data-start=\"2682\" data-end=\"2741\"\u003e\n\u003cp data-start=\"2684\" data-end=\"2741\"\u003eHelps correct common \u003cstrong data-start=\"2705\" data-end=\"2741\"\u003eAllison 1000 valve body problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1x9toq3\" data-start=\"2742\" data-end=\"2847\"\u003e\n\u003cp data-start=\"2744\" data-end=\"2847\"\u003eReduces risk of diagnostic trouble codes including\u003cbr data-start=\"2794\" data-end=\"2797\"\u003e\u003cstrong data-start=\"2799\" data-end=\"2847\"\u003eP0732, P0733, P0734, P0735, P0766, and P0777\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1spzy96\" data-start=\"2848\" data-end=\"2914\"\u003e\n\u003cp data-start=\"2850\" data-end=\"2914\"\u003e\u003cstrong data-start=\"2850\" data-end=\"2878\"\u003eDyno-tested valve bodies\u003c\/strong\u003e for quality control before shipping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hp77ox\" data-start=\"2915\" data-end=\"2976\"\u003e\n\u003cp data-start=\"2917\" data-end=\"2976\"\u003e\u003cstrong data-start=\"2917\" data-end=\"2947\"\u003eDirect bolt-in replacement\u003c\/strong\u003e for stock Duramax valve body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2978\" data-end=\"2981\"\u003e\n\u003ch1 data-section-id=\"1gwdkmi\" data-start=\"2983\" data-end=\"3030\"\u003eBuilt for High-Horsepower Duramax Performance\u003c\/h1\u003e\n\u003cp data-start=\"3032\" data-end=\"3239\"\u003eThe \u003cstrong data-start=\"3036\" data-end=\"3061\"\u003e2001–2003 LB7 Duramax\u003c\/strong\u003e platform is capable of producing significant power with the right upgrades. However, once horsepower levels increase, the factory Allison valve body often becomes a restriction.\u003c\/p\u003e\n\u003cp data-start=\"3241\" data-end=\"3396\"\u003eThe \u003cstrong data-start=\"3245\" data-end=\"3290\"\u003eTier One High-Pressure Allison Valve Body\u003c\/strong\u003e is engineered to handle these higher power levels by improving hydraulic control within the transmission.\u003c\/p\u003e\n\u003cp data-start=\"3398\" data-end=\"3456\"\u003eThis makes it an ideal upgrade for Duramax trucks running:\u003c\/p\u003e\n\u003cul data-start=\"3458\" data-end=\"3647\"\u003e\n\u003cli data-section-id=\"1596chu\" data-start=\"3458\" data-end=\"3490\"\u003e\n\u003cp data-start=\"3460\" data-end=\"3490\"\u003ePerformance Duramax ECM tuning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"uh5y2q\" data-start=\"3491\" data-end=\"3525\"\u003e\n\u003cp data-start=\"3493\" data-end=\"3525\"\u003eLarger aftermarket turbochargers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"a5j0l6\" data-start=\"3526\" data-end=\"3560\"\u003e\n\u003cp data-start=\"3528\" data-end=\"3560\"\u003eHigh-flow or oversized injectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"c479g0\" data-start=\"3561\" data-end=\"3595\"\u003e\n\u003cp data-start=\"3563\" data-end=\"3595\"\u003eBuilt Allison 1000 transmissions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10j18g0\" data-start=\"3596\" data-end=\"3625\"\u003e\n\u003cp data-start=\"3598\" data-end=\"3625\"\u003ePerformance exhaust systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ufzz0z\" data-start=\"3626\" data-end=\"3647\"\u003e\n\u003cp data-start=\"3628\" data-end=\"3647\"\u003eHeavy towing setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3649\" data-end=\"3770\"\u003eWith a \u003cstrong data-start=\"3656\" data-end=\"3698\"\u003epower rating exceeding 1000 horsepower\u003c\/strong\u003e, this valve body is built to support serious diesel performance builds.\u003c\/p\u003e\n\u003chr data-start=\"3772\" data-end=\"3775\"\u003e\n\u003ch1 data-section-id=\"oe04tl\" data-start=\"3777\" data-end=\"3807\"\u003eUpgraded Internal Components\u003c\/h1\u003e\n\u003cp data-start=\"3809\" data-end=\"3975\"\u003eEvery Tier One Allison valve body is assembled using a combination of \u003cstrong data-start=\"3879\" data-end=\"3926\"\u003enew OEM components and performance upgrades\u003c\/strong\u003e designed to increase durability and reliability.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1i88ioc\" data-start=\"3977\" data-end=\"4013\"\u003eTransGo Jr. Valve Body Shift Kit\u003c\/h3\u003e\n\u003cp data-start=\"4015\" data-end=\"4243\"\u003eEach unit includes a \u003cstrong data-start=\"4036\" data-end=\"4061\"\u003eTransGo Jr. shift kit\u003c\/strong\u003e, which features hardened steel trim valves, upgraded springs, and improved internal components that help the transmission maintain proper clutch pressure under high load conditions.\u003c\/p\u003e\n\u003cp data-start=\"4245\" data-end=\"4259\"\u003eThis improves:\u003c\/p\u003e\n\u003cul data-start=\"4261\" data-end=\"4329\"\u003e\n\u003cli data-section-id=\"1k100jq\" data-start=\"4261\" data-end=\"4280\"\u003e\n\u003cp data-start=\"4263\" data-end=\"4280\"\u003eShift consistency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"lq7x99\" data-start=\"4281\" data-end=\"4303\"\u003e\n\u003cp data-start=\"4283\" data-end=\"4303\"\u003eClutch holding power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1tmc8nz\" data-start=\"4304\" data-end=\"4329\"\u003e\n\u003cp data-start=\"4306\" data-end=\"4329\"\u003eTransmission durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"15rb68i\" data-start=\"4331\" data-end=\"4353\"\u003eNew Trim Solenoids\u003c\/h3\u003e\n\u003cp data-start=\"4355\" data-end=\"4510\"\u003eEach valve body includes \u003cstrong data-start=\"4380\" data-end=\"4415\"\u003enew Trim A and Trim B solenoids\u003c\/strong\u003e, carefully inspected and tested to ensure precise hydraulic control and long-term reliability.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1dr24iv\" data-start=\"4512\" data-end=\"4544\"\u003eNew Pressure Switch Manifold\u003c\/h3\u003e\n\u003cp data-start=\"4546\" data-end=\"4671\"\u003eA \u003cstrong data-start=\"4548\" data-end=\"4584\"\u003enew OEM pressure switch manifold\u003c\/strong\u003e is installed to eliminate common failures and maintain accurate transmission feedback.\u003c\/p\u003e\n\u003ch3 data-section-id=\"9qd7xa\" data-start=\"4673\" data-end=\"4701\"\u003eDyno-Tested Valve Bodies\u003c\/h3\u003e\n\u003cp data-start=\"4703\" data-end=\"4851\"\u003eAfter assembly, every valve body is \u003cstrong data-start=\"4739\" data-end=\"4788\"\u003etested on Tier One’s in-house valve body dyno\u003c\/strong\u003e to confirm proper operation before it is shipped to customers.\u003c\/p\u003e\n\u003chr data-start=\"4853\" data-end=\"4856\"\u003e\n\u003ch1 data-section-id=\"1mj1fn0\" data-start=\"4858\" data-end=\"4891\"\u003eAllison 1000 Valve Body Fitment\u003c\/h1\u003e\n\u003cp data-start=\"4893\" data-end=\"4952\"\u003eThis upgraded valve body fits the following Duramax trucks:\u003c\/p\u003e\n\u003cp data-start=\"4954\" data-end=\"5089\"\u003e\u003cstrong data-start=\"4954\" data-end=\"4997\"\u003e2001 Chevrolet Silverado 2500HD Duramax\u003c\/strong\u003e\u003cbr data-start=\"4997\" data-end=\"5000\"\u003e\u003cstrong data-start=\"5000\" data-end=\"5043\"\u003e2002 Chevrolet Silverado 2500HD Duramax\u003c\/strong\u003e\u003cbr data-start=\"5043\" data-end=\"5046\"\u003e\u003cstrong data-start=\"5046\" data-end=\"5089\"\u003e2003 Chevrolet Silverado 2500HD Duramax\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"5091\" data-end=\"5199\"\u003e\u003cstrong data-start=\"5091\" data-end=\"5125\"\u003e2001 GMC Sierra 2500HD Duramax\u003c\/strong\u003e\u003cbr data-start=\"5125\" data-end=\"5128\"\u003e\u003cstrong data-start=\"5128\" data-end=\"5162\"\u003e2002 GMC Sierra 2500HD Duramax\u003c\/strong\u003e\u003cbr data-start=\"5162\" data-end=\"5165\"\u003e\u003cstrong data-start=\"5165\" data-end=\"5199\"\u003e2003 GMC Sierra 2500HD Duramax\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"5201\" data-end=\"5287\"\u003e\u003cstrong data-start=\"5201\" data-end=\"5247\"\u003e2001–2003 Chevrolet Silverado 3500 Duramax\u003c\/strong\u003e\u003cbr data-start=\"5247\" data-end=\"5250\"\u003e\u003cstrong data-start=\"5250\" data-end=\"5287\"\u003e2001–2003 GMC Sierra 3500 Duramax\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"5289\" data-end=\"5365\"\u003eCompatible with trucks equipped with the \u003cstrong data-start=\"5330\" data-end=\"5364\"\u003eAllison 1000 transmission only\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"5367\" data-end=\"5370\"\u003e\n\u003ch1 data-section-id=\"o4w4uu\" data-start=\"5372\" data-end=\"5398\"\u003eInstallation Information\u003c\/h1\u003e\n\u003ch3 data-section-id=\"onw8sa\" data-start=\"5400\" data-end=\"5433\"\u003eTransmission Relearn Required\u003c\/h3\u003e\n\u003cp data-start=\"5435\" data-end=\"5584\"\u003eAfter installing this valve body, the Allison transmission will require a \u003cstrong data-start=\"5509\" data-end=\"5530\"\u003erelearn procedure\u003c\/strong\u003e to properly calibrate shift timing and line pressure.\u003c\/p\u003e\n\u003ch3 data-section-id=\"lsebn1\" data-start=\"5586\" data-end=\"5627\"\u003eTransmission Pump Upgrade Recommended\u003c\/h3\u003e\n\u003cp data-start=\"5629\" data-end=\"5790\"\u003eWhile this valve body improves line pressure and reliability on its own, \u003cstrong data-start=\"5702\" data-end=\"5789\"\u003emaximum line pressure gains require upgrading the factory Allison transmission pump\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"5792\" data-end=\"5923\"\u003eTier One includes \u003cstrong data-start=\"5810\" data-end=\"5846\"\u003eRatioTek pump upgrade components\u003c\/strong\u003e, though installing them requires removing the transmission from the vehicle.\u003c\/p\u003e\n\u003ch3 data-section-id=\"g64a87\" data-start=\"5925\" data-end=\"5940\"\u003eCore Charge\u003c\/h3\u003e\n\u003cp data-start=\"5942\" data-end=\"6117\"\u003eA \u003cstrong data-start=\"5944\" data-end=\"5975\"\u003e$500 refundable core charge\u003c\/strong\u003e applies to this valve body. The core charge will be refunded once your original valve body is returned and inspected in acceptable condition.\u003c\/p\u003e\n\u003cp data-start=\"6119\" data-end=\"6204\"\u003eThe core charge can also be waived if your stock valve body is sent in ahead of time.\u003c\/p\u003e\n\u003chr data-start=\"6206\" data-end=\"6209\"\u003e\n\u003ch1 data-section-id=\"hkd5a4\" data-start=\"6211\" data-end=\"6239\"\u003eFrequently Asked Questions\u003c\/h1\u003e\n\u003ch3 data-section-id=\"zerwu1\" data-start=\"6241\" data-end=\"6293\"\u003eWhat does an Allison 1000 valve body upgrade do?\u003c\/h3\u003e\n\u003cp data-start=\"6295\" data-end=\"6523\"\u003eUpgrading the valve body improves hydraulic control inside the transmission, allowing for \u003cstrong data-start=\"6385\" data-end=\"6456\"\u003ehigher line pressure, firmer shifts, and improved clutch engagement\u003c\/strong\u003e, which helps the Allison transmission handle increased horsepower.\u003c\/p\u003e\n\u003ch3 data-section-id=\"z8qd2u\" data-start=\"6525\" data-end=\"6577\"\u003eIs this valve body required for a tuned Duramax?\u003c\/h3\u003e\n\u003cp data-start=\"6579\" data-end=\"6761\"\u003eWhile not always required for mild tuning, trucks running \u003cstrong data-start=\"6637\" data-end=\"6704\"\u003ehigher horsepower levels, larger turbos, or heavy towing setups\u003c\/strong\u003e greatly benefit from a high-pressure valve body upgrade.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1w0j42g\" data-start=\"6763\" data-end=\"6810\"\u003eHow much power can this valve body support?\u003c\/h3\u003e\n\u003cp data-start=\"6812\" data-end=\"6969\"\u003eThe Tier One High-Pressure Allison Valve Body is \u003cstrong data-start=\"6861\" data-end=\"6913\"\u003erated for applications exceeding 1000 horsepower\u003c\/strong\u003e when paired with the appropriate transmission upgrades.\u003c\/p\u003e\n\u003chr data-start=\"6971\" data-end=\"6974\"\u003e\n\u003ch1 data-section-id=\"puiywa\" data-start=\"6976\" data-end=\"7020\"\u003eOrder Your Allison 1000 Valve Body Upgrade\u003c\/h1\u003e\n\u003cp data-start=\"7022\" data-end=\"7277\"\u003eIf you're looking to \u003cstrong data-start=\"7043\" data-end=\"7158\"\u003eimprove transmission reliability, increase line pressure, and support high horsepower in your 2001–2003 Duramax\u003c\/strong\u003e, the \u003cstrong data-start=\"7164\" data-end=\"7214\"\u003eTier One High-Pressure Allison 1000 Valve Body\u003c\/strong\u003e is a proven upgrade trusted by diesel performance enthusiasts.\u003c\/p\u003e","brand":"Tier One Transmissions","offers":[{"title":"Default Title","offer_id":51899347435803,"sku":"TODT1-A1000-AVB-0103","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/TierOneAllison1000HighPressureValveBodyTODT1-A1000-AVB-0103.jpg?v=1773702315","url":"https:\/\/wwmperformance.com\/products\/tier-one-allison-1000-high-pressure-valve-body-todt1-a1000-avb-0103-2001-2003-gm-2500-3500-lb7","provider":"WWM Performance","version":"1.0","type":"link"}