Pick your tier based on how you use the truck — stock replacement, towing + tune, built street, or big power. Every package includes a matched lockup converter.
Jump to: 3-5-R / 4-5-6 clutch strategy • TCC/PWM & converter setup • Cooling path & pans • Install checklist • Programming & adaptive learn
The 6L80E’s 3-5-R and 4-5-6 elements are sensitive to heat and apply timing. Our Street/Sport/Track tiers increase clutch capacity, revise clearances and hydraulics, and pair the package to vehicle weight, gears, and tire load so it holds apply pressure without flare.
PWM lockup and heavy loads can overheat the TCC. We supply a matched lockup converter (multi-disc on upper tiers) to reduce slip and improve lockup control—keeping temps stable in tow/track scenarios.
Run fresh DEXRON-VI, confirm cooler return flow, and consider a low-restriction auxiliary cooler. A deep aluminum pan adds capacity and improves heat rejection during long grades or hot weather.
Perform a full reprogramming (TCM/TEHCM) appropriate to your year/build, then run a light-throttle adaptive drive cycle—progressive upshifts and gentle coastdowns—to seat adaptives and protect fresh clutches.
6L80 (RPO MYC) differs from 6L90 (RPO MYD) in internal capacity and hard-part dimensions. Verify before ordering.
Yes. A full reprogramming is required after install. Then perform an adaptive learn drive cycle.
Yes—each package includes a matched lockup converter (multi-disc options on Sport/Track).
DEXRON-VI. Capacity varies with pan/converter; verify at temp using the correct procedure.
Order the correct output/tailhousing configuration. If changing transfer case/gearing, tell us—we’ll match the package.
Drop temps and protect 3-5-R / 4-5-6 under load.
CoolingExtra capacity + better heat rejection for towing/track.
CapacityStart fresh after install and set level properly at temp.
FluidYear-correct electronics; reprogramming required after install.
Electronics
