10L80 Banner Rebuild Kit 2018, new and ready to install. Fits the 10L80. Ships fast from the USA.
If your Silverado, Sierra, Tahoe, Yukon or Escalade has a 10L80 that slips on a shift, flares between gears, smells burnt or drops friction material on the pan magnet, the clutches and seals have reached the end. This banner rebuild kit is built for 2018-and-later 10L80 units and puts the main soft parts of a rebuild in one box: an overhaul gasket and seal kit, a friction pack, clutch pistons and a new filter. The kit is listed under part number HDK135904LSF, and that same kit number also covers the 10L90.
The 10L80 is a clutch-to-clutch 10-speed. ATRA notes that four components must be applied for power to flow through the gear train, and each shift hands torque from one clutch to the next with roughly 0.3 seconds of overlap managed by the TCM. That design is smooth when it is healthy, but it leaves no band or sprag to hide a tired clutch: a worn friction pack or a leaking piston seal shows up as a slip or harsh bind on whichever shift that clutch is involved in. This kit renews those wear points:
Steel plates and bushings are not part of the listing, so plan for those separately if your teardown shows heat-marked steels or worn bushings.
Do not tear down a 10L80 until the outside causes are ruled out. GM preliminary information PIP5792E traced harsh shifts, shudder and high fluid temperature on some low-mileage 10L80 and 10L90 trucks to a twisted cooler line. Valve body wear is the other big one: Sonnax reports the feed limit low valve can wear in as little as 30,000 miles and set P0747, and low line pressure from a worn valve body is exactly what burns clutches. Read our 10L80 valve body symptoms guide and the valve body recall write-up first, because rebuilding the clutches behind a worn valve body only buys you a second failure. If the clutches are the confirmed problem, our 10L80 3-4 clutch failure guide walks through the most common pack to go.
This kit is for GM 10L80 transmissions built from 2018 on, which covers the full-size trucks and SUVs that use the unit, including the Silverado and Sierra 1500 and the Tahoe, Suburban, Yukon and Escalade. GM ran the 10L80 under several RPO codes, including MQB, MQC, MHS and MHT, and it has both Generation 1 and Generation 2 versions. Clutch stack counts are not identical across every 10-speed variant, so lay the new frictions next to your old ones by clutch before assembly. If you are unsure, send us your year and VIN before ordering. Browse every part for this unit on our 10L80 parts page.
For a full picture of parts and labor, see the 10L80 rebuild cost guide.
| Fits | 10L80 2018 |
| Part type | Banner Rebuild Kit |
| 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.
No. The kit is an overhaul gasket and seal kit, a friction pack, clutch pistons and a filter. Reuse your steels only if they are flat and free of heat marks; otherwise replace them and set clutch clearance with the new steels.
The kit is listed for 2018-and-later 10L80 transmissions, which includes those trucks. Because GM built the 10L80 in Gen 1 and Gen 2 versions under several RPO codes, compare the new frictions to your old ones by clutch, or send us your year and VIN to check before ordering.
DEXRON ULV. GM's capacity chart lists 7.7 L (8.1 qt) for a fluid change. A freshly rebuilt unit with a drained converter needs more, so set the final level hot using the check procedure.
Test it first. Worn valve body bores and valves cause low line pressure, which burns clutches. If a vacuum test or pressure codes such as P0747 point to wear, replace it, and remember a new valve body must be programmed with its Part Unique Number.
Yes. Reset and relearn the shift adapts before judging shift quality. A rebuilt 10L80 can shift firm or soft until the TCM has learned the new clutch fill times.
