AC Delco 4-5-6 Clutch Piston (Bonded) for GM 6L80 6L90 2005-2024

AC Delco 4-5-6 Clutch Piston (Bonded) — fits GM 6L80 (2006-2022) and 6L90 (2005-2024) Six-Speed Automatic Transmissions

Direct match for GM OEM part number 24232416. Also cross-referenced to industry aftermarket numbers 33456, 104960A, and 45964C.

About This Part This bonded piston applies the 4-5-6 clutch pack in your 6L80 or 6L90 transmission, engaging the plates that drive 4th, 5th, and 6th gears. Over time, a worn, cracked, or weak factory piston loses clutch apply pressure, a leading cause of 4-5-6 clutch pack burnout on these units.

Watch for These Failure Symptoms RPM flare or slipping between 4th and 6th gears, harsh or delayed upshifts, and burnt clutch material found in the pan during a fluid or filter service can all point to a worn piston or a failing 4-5-6 clutch pack.

Fits the Following: Chevrolet Silverado 1500, 2500HD, 3500HD Chevrolet Tahoe, Suburban, Avalanche, Express Chevrolet Camaro, Camaro ZL1, Corvette, Caprice PPV GMC Sierra 1500, 2500HD, 3500HD, Yukon, Yukon XL, Denali, Savana Cadillac Escalade, Escalade ESV, Escalade EXT, CTS-V, STS-V, XLR-V Hummer H2

Please confirm your exact transmission model and application before ordering, as fitment can vary by year and configuration.

Construction Steel backing plate with a permanently bonded, high-temperature rubber sealing lip — no separate seals needed, no additional machining required. Sold individually as a single piston. Matches factory dimensions: 0.805" thick, 4.960" OD, 1.445" ID.

Complete Your Rebuild Pair this piston with Lubegard ATF Protectant when refilling your transmission fluid — a trusted way to help support smoother shifts and extend transmission life after a clutch pack service.