Cognito Polyurethane UCA Bushing Kit | GM 1500/HD Trucks & SUVs / Hummer H2

The Obsidian Vision

Cognito Upper Control Arms across the 1999–2020 GM 1500 platform, 2001–2010 GM HD trucks, and 2003–2009 Hummer H2 use a polyurethane press-in bushing at the UCA frame pivot — and like all polyurethane bushings under sustained load, heat, and UV exposure, they wear, crack, and degrade over time. This is the factory-correct Cognito replacement polyurethane bushing kit for those arms: 8 bushings and 4 crush sleeves covering both UCAs, sourced directly from Cognito, correct durometer and bore geometry. If your Cognito UCAs use press-in polyurethane bushings at the frame pivot (no grease fittings), this is the kit. If your arms have grease fittings at the pivot, see SKU 199-91161 instead.

Concierge Fitment Guarantee

Every order is manually reviewed by our technicians to ensure 100% compatibility with your build before we ship.

Engineering Breakdown

• Restores the polyurethane press-in pivot bushing interface on Cognito Upper Control Arms to factory-correct specification — replacing worn, cracked, or collapsed bushings that introduce UCA slop, steering wander, front-end clunking, and accelerated ball joint wear on high-mileage GM 1500, HD, and Hummer H2 applications running Cognito UCAs.
• Eliminates the pivot bushing deflection that degrades the corrected ball joint angle and droop travel geometry that Cognito UCAs are engineered to maintain — restoring precise pivot behavior at the frame mount and returning the UCA to its designed performance envelope for lifted and leveled applications.
• Delivers a complete two-arm service kit — 8 polyurethane bushings and 4 crush sleeves — sourced directly from Cognito with correct durometer, bore diameter, and crush sleeve dimensions for the press-in pivot design used across the GM 1500, HD, and H2 UCA product lines.

This kit covers both upper control arms (driver and passenger) with 8 bushings and 4 crush sleeves. The polyurethane bushing material provides a firmer pivot interface than OEM rubber bushings, maintaining the precise pivot geometry that Cognito UCAs require at elevated ride heights. This kit is compatible exclusively with Cognito UCAs that use press-in polyurethane bushings at the frame pivot — identifiable by the absence of grease fittings (zerks) at the UCA frame mount. If your Cognito UCAs have grease fittings at the pivot, order SKU 199-91161 (greaseable pivot bushing kit) instead. If you are unsure which bushing design your Cognito UCAs use, contact the OFAS team with your UCA part number before ordering. At 1.7 lbs, this kit ships standard parcel.

Audit Table

Verified Fitment (OFAS Standard)

✅ CONFIRMED — Chevrolet Silverado 1500 / GMC Sierra 1500 (1999–2018):
1999–2018 Chevrolet Silverado 1500 / GMC Sierra 1500 — all trims 2WD/4WD
2007 Chevrolet Silverado 1500 Classic / GMC Sierra 1500 Classic — all trims
2019 Chevrolet Silverado 1500 LD (WT, LT, Custom)

✅ CONFIRMED — Chevrolet/GMC Full-Size SUVs (2000–2020):
2000–2020 Chevrolet Tahoe / GMC Yukon — all trims 2WD/4WD
2000–2020 Chevrolet Suburban 1500 / GMC Yukon XL 1500 — all trims 2WD/4WD
2001–2013 Chevrolet Suburban 2500 / GMC Yukon XL 2500 — all trims 2WD/4WD
2015–2020 GMC Yukon XL (SLE, SLT, Denali) 2WD/4WD

✅ CONFIRMED — GM HD Trucks (2001–2010):
2001–2010 Chevrolet Silverado / GMC Sierra 1500HD, 2500, 2500HD, 3500, 3500HD 2WD/4WD

✅ CONFIRMED — Hummer H2 / H2 SUT (2003–2009):
2003–2009 Hummer H2 SUV and H2 SUT — all trims

❌ REQUIREMENTS & CRITICAL NOTICES:
⚠️ COGNITO UCA PRESS-IN POLYURETHANE DESIGN ONLY: This kit fits only Cognito UCAs with press-in polyurethane bushings at the frame pivot (no grease fittings). If your Cognito UCAs have grease fittings (zerks) at the frame pivot, order SKU 199-91161 instead.
⚠️ NOT FOR OEM OR OTHER AFTERMARKET UCAs: This is a Cognito-specific service part. It is not designed for OEM upper control arms or other aftermarket UCA brands.
If you are unsure which bushing design your Cognito UCAs use, contact the OFAS team with your UCA part number before ordering.

Installation & Technical Notes

Scope: Bushing replacement at the UCA frame pivot — requires removal of the upper control arm from the vehicle to press out worn bushings and install new ones.
Press Required: A hydraulic or arbor press is required to remove and install press-in polyurethane bushings. Do not attempt to drive bushings in or out with a hammer — this will damage the UCA pivot bore and crush sleeve seating surface.
Crush Sleeve Installation: Install new crush sleeves with each bushing replacement. Do not reuse OEM or previously installed crush sleeves.
Alignment Required: Yes — a professional front alignment is required after reinstalling the upper control arm. Caster and camber must be verified and set to specification.
Torque Specifications: Torque all UCA mounting fasteners to GM specification with the suspension at ride height under load.
Re-Torque Interval: Re-torque all suspension fasteners after the first 500 miles post-installation.

Wheel & Tire Fitment

This is a service/maintenance part that replaces UCA pivot bushings only. It does not alter suspension lift height, wheel offset requirements, or tire clearance. Wheel and tire fitment is determined by your installed lift kit and UCA configuration.

Our team is standing by to verify your specific Cognito UCA part number and bushing design before you order — critical to confirm press-in polyurethane vs. greaseable pivot. Purchase with confidence; we review every build.