{"product_id":"axiom-supply-upper-control-arm-bushing-kit-gm-hd-truck-2500-3500-silverado-sierra-2011-2026","title":"Axiom Supply Upper Control Arm Bushing Kit | 2011-2026 GM 2500HD\/3500HD | Suspension Rebuild","description":"\u003ch2\u003eAxiom Upper Control Arm Bushing Kit | 2011–2026 Chevy Silverado \/ GMC Sierra 2500HD \u0026amp; 3500HD | Suspension Rebuild\u003c\/h2\u003e\n\u003cp\u003eThe Axiom Upper Control Arm Bushing Kit (SKU: AXGMUCAB11) is a direct-fit replacement bushing kit for the upper control arm (UCA) on 2011–2026 Chevrolet Silverado 2500HD\/3500HD and GMC Sierra 2500HD\/3500HD trucks (K2XX and T1XX platforms). Worn upper control arm bushings are a primary cause of front-end clunking, steering wander, uneven tire wear, and inconsistent alignment on high-mileage GM HD trucks. These replacement bushings restore precise control arm pivot movement, improving ride quality, handling predictability, and long-term suspension performance under towing, hauling, and off-road loads. Front-end alignment is mandatory after installation.\u003c\/p\u003e\n\n\u003ch2\u003eVerified Fitment (OFAS Standard)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChevy Silverado 2500HD:\u003c\/strong\u003e 2011–2026 (K2XX and T1XX platforms)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChevy Silverado 3500HD:\u003c\/strong\u003e 2011–2026 (K2XX and T1XX platforms)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMC Sierra 2500HD:\u003c\/strong\u003e 2011–2026 (K2XX and T1XX platforms)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMC Sierra 3500HD:\u003c\/strong\u003e 2011–2026 (K2XX and T1XX platforms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDoes NOT fit:\u003c\/strong\u003e 2010 or earlier Silverado\/Sierra HD (GMT800\/GMT900 platform — use AXGMUCAB10 instead). Does not fit Silverado\/Sierra 1500 (different UCA geometry). Confirm model year and platform before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eGM HD UCA Bushing Platform Guide\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2001–2010 GMT800\/GMT900:\u003c\/strong\u003e Use AXGMUCAB10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2011–2026 K2XX\/T1XX:\u003c\/strong\u003e Use AXGMUCAB11 (this listing)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e AXGMUCAB11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Upper control arm bushing kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Direct-fit replacement for factory K2XX\/T1XX UCA bushings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Complete kit — confirm contents cover both sides before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Front suspension rebuild — towing, hauling, daily driving, off-road\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSymptoms of Worn Upper Control Arm Bushings\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClunking or knocking from the front suspension over bumps or during steering input\u003c\/li\u003e\n\u003cli\u003eSteering wander or vague on-center feel\u003c\/li\u003e\n\u003cli\u003eUneven or accelerated front tire wear\u003c\/li\u003e\n\u003cli\u003eAlignment that cannot be held or drifts after service\u003c\/li\u003e\n\u003cli\u003eVisible cracking, tearing, or separation of the bushing material on inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlignment mandatory:\u003c\/strong\u003e Full front-end alignment (caster, camber, toe) is required after UCA bushing replacement. Bushing replacement changes the control arm pivot geometry — do not drive the vehicle until aligned by a qualified alignment technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace in pairs:\u003c\/strong\u003e Replace UCA bushings on both sides simultaneously. Mismatched bushing condition between left and right will cause unequal suspension compliance and inconsistent handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque at ride height:\u003c\/strong\u003e Final torque on UCA bushing hardware must be applied with the suspension loaded at ride height — not at full droop. Torquing at full droop preloads the bushing and causes premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePress-fit installation:\u003c\/strong\u003e UCA bushings are typically pressed into the control arm housing. A hydraulic press or bushing press tool is required for proper installation. Do not drive bushings in with a hammer — uneven seating will cause premature wear and noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect UCA shell:\u003c\/strong\u003e Inspect the upper control arm housing for cracks, corrosion, or deformation before installing new bushings. A damaged housing will not retain the bushing correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque specs:\u003c\/strong\u003e Torque UCA pivot hardware to OEM specification for 2011–2026 GM 2500HD\/3500HD K2XX\/T1XX (verify in GM service manual).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Warning\u003c\/h2\u003e\n\u003cp\u003eDo not install on 2010 or earlier GM HD trucks (GMT800\/GMT900) — use AXGMUCAB10 instead. Do not torque UCA hardware at full suspension droop — bushing preload will cause premature failure. Do not drive the vehicle until a full front-end alignment has been completed. A hydraulic press is required for correct bushing installation — do not attempt to drive bushings in with a hammer. Once installed, the kit is non-returnable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre you replacing bushings due to clunking, wander, or tire wear, and have you confirmed your truck is 2011–2026 K2XX or T1XX (not 2010 or earlier GMT900) — do you have access to a hydraulic press for installation?\u003c\/strong\u003e\u003c\/p\u003e","brand":"Axiom Supply","offers":[{"title":"Default Title","offer_id":51430747832641,"sku":"AXGMUCAB11","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/AXGMUCAB10_ff32ae59-f363-4045-9456-7a2cac6a33ce.png?v=1772305949","url":"https:\/\/obsidianforgedautosupply.com\/products\/axiom-supply-upper-control-arm-bushing-kit-gm-hd-truck-2500-3500-silverado-sierra-2011-2026","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}