8L45 Clutch Module 2016-2022, new and ready to install. Fits the 8L45. Ships fast from the USA.
Despite the name, this 8L45 clutch module is a complete soft-parts package rather than a single clutch pack. The listing is a banner-style kit that combines an overhaul gasket and seal kit with a friction clutch kit for GM 8L45 eight-speeds from 2016 through 2022. That covers the Chevrolet Camaro and Cadillac ATS, CTS and CT6 that launched the 8L45, and the Colorado and Canyon V6 trucks that used it later. If your 8L45 slips in certain gears, flares between shifts, smells burnt, or has friction material on the pan magnet, this is the box that covers the clutches and the seals that feed them.
Eight forward ratios in the 8L45 come from five multi-plate clutches. GM's adaptive functions bulletin 16-NA-019 lays out the apply chart: each shift applies one clutch while another releases, so the 3-4 shift, for example, applies C5 while C3 lets go. The frictions in this kit are the plates that grip in each of those packs. The overhaul seals keep each piston holding pressure, so a new friction pack is not fed by a leaking piston. Doing both together is the normal approach once a unit has slipped long enough to burn its plates, because worn frictions cut capacity and the heat they make hardens the seals next to them.
A 3-4 neutral on these units is not always burned frictions. Sonnax documents swapped S8 and S9 solenoid connectors that exhaust C5 apply oil, and worn clutch control valve bores that bleed apply pressure; both are explained in our 8L90 and 8L45 3-4 clutch failure guide. Electrical faults are covered in the shift solenoid symptoms guide. If the fluid is burnt and there is clutch debris on the magnet, the frictions are done and this kit is the right repair.
The kit is listed for the 8L45 from 2016 to 2022 and does not fit the 8L90. That span crosses two GM changes. GEARS Magazine reports that in 2018 the 2-3-4-6-8 clutch pistons, seals and wave plate were redesigned and the early and late seals are different sizes, and that from 2019 the 4-5-6-7-8-Reverse (C5) frictions on both the 8L45 and 8L90 changed from a radial groove to a spiral groove pattern tied to a calibration change, not meant for older units. Compare the frictions and seals in the kit with what you remove, and keep the C5 plate design matched to your model year. Send us your year and VIN if you are unsure. More parts are on the 8L90 and 8L45 collection page.
| Fits | 8L45 2016-2022 |
| Part type | Clutch Module |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a full soft-parts kit: an overhaul gasket and seal kit plus a friction clutch kit for the 8L45. Steels are not listed in the contents, so plan to reuse good ones or buy them separately.
8L45 eight-speeds from 2016 to 2022, including the Chevrolet Camaro, Cadillac ATS, CTS and CT6, and the Colorado and Canyon V6 trucks. It does not fit the heavier 8L90. Confirm with your VIN before ordering.
The 4-5-6-7-8-Reverse (C5) frictions changed in 2019 from a radial groove to a spiral groove design with a matching calibration change. Match the plates in the kit to the ones you remove for your model year.
GM's procedure uses a load gauge and an air fixture, but GEARS testing found careful traditional dial indicator methods can be used. Either way, every pack must end up within GM specification.
Refill with DEXRON HP, check the level hot, clear the adaptive values and run the service fast learn, then drive through normal shifts so the control module can adapt to the new frictions.
