6L90 Banner Rebuild Kit 2007, new and ready to install. Fits the 6L90. Ships fast from the USA.
A 2007 Silverado or Sierra 2500HD/3500HD, Express or Savana that has spent its life towing tends to wear out its 6L90 clutch packs before anything else. When the truck starts slipping on a grade, flaring into fourth or fifth, or showing dark fluid on the dipstick, a banner kit is the practical way to renew the wear parts without paying for every hard part in the case. This one is a Raybestos kit built for the 2007 6L90.
The 6L90 makes six speeds with five clutch packs, and every one of them depends on its frictions holding and its piston seals keeping apply pressure in. A banner kit pairs the overhaul gasket and seal set with a new friction pack and a filter, which is the core of a standard rebuild. The kit shown for this listing includes a boxed Raybestos clutch pack, a new filter, the pan and valve body gaskets, and the piston, lip and sealing ring set. Steels are not pictured, so reuse yours only if they measure flat with no bluing; otherwise budget for steels. If you would rather start from a more complete set, the 2007 6L90 master rebuild kit is the step up.
Sonnax notes that the stock 4-5-6 piston has limited contact area on the plates and that the backing plate can cone under high apply pressure, which is why that pack is so often the burnt one in towing trucks.
Put a gauge on the line pressure port before you order parts. A GEARS case study on a 2007 GMC K2500 found line pressure stuck at 65 to 70 psi with no rise on acceleration, and the pressure stayed the same with the solenoid unplugged, which pointed to a hydraulic fault rather than a bad module. That same truck had burnt clutches, but the clutches were the result, not the cause. Rule out the pressure regulator, valve body and cooler flow first. Our Silverado 2500 shift problems guide walks through the diagnosis, and 6L90 common problems and fixes covers the cooler line and thermal bypass issues that cook fluid on HD trucks.
This kit is listed for the 2007 GM 6L90 (RPO MYD), the first model year the 6L90 went into heavy-duty pickups and full-size vans. It is not a 6L80 kit; ATSG lists fifteen internal parts that differ between the two, and the wrong frictions will not fit the 6L90 packs. GM made running changes through the 6L90's life, so compare the new friction count and size with your old plates before you build, or send us your year and VIN to check. Other years and kit levels are on the 6L90 parts page.
If valve body bores were worn enough to lose pressure, a 6L90 Zip Kit valve body repair kit fixes that while the case is open.
| Fits | 6L90 2007 |
| Part type | Banner Rebuild Kit |
| Condition | New |
| Brand | Raybestos |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The kit pictured includes a Raybestos clutch pack, a filter, and the overhaul gasket and seal set with pan and valve body gaskets and piston and lip seals. Steels are not shown, so measure and reuse yours or buy new ones.
A banner kit covers the frictions, seals, gaskets and filter for a standard rebuild. A master kit is the most complete soft-parts set for the unit and costs more. Check each listing's contents either way, since some master kits also leave out the steels.
It is listed for the 2007 6L90 and will not fit a 6L80. Later 6L90 years may share parts, but compare the friction count and size with your old plates or send us your year and VIN first.
Heat and apply pressure. The 4-5-6 pack is a known weak point under load, and a cooler restriction or a thermal bypass valve that opens late lets fluid temperature climb and glaze the frictions.
Yes. Clear the adaptive values with a scan tool and run the adaptive learn so the controller relearns clutch fill times for the new frictions. Harsh or soft shifts right after a rebuild usually settle once it is done.
