6L90 Clutch Module 2006, new and ready to install. Fits the 6L90. Ships fast from the USA.
Dark fluid that smells scorched, a 6L90 that flares between gears with a load behind it, or fiber paste in the pan after a hard summer of towing: those are the reasons people look for a 6L90 clutch module. This one is a BorgWarner friction plate module from the aftermarket arm of the company that supplies friction material to automakers. As the photo shows, the board carries friction plates only, in three tooth-and-diameter families, so it suits a builder who will reuse or separately replace the steels. It fits the GM six-speed family that started in 2006 and runs through the 6L90 in Silverado and Sierra HD pickups, Express and Savana vans and HD Suburbans.
Every 6L90 gear is made by two of five clutches holding at once. First gear uses the 1-2-3-4 and Low/Reverse clutches, second swaps Low/Reverse for 2-6, third adds 3-5-R, and so on up to sixth on the 4-5-6 and 2-6 packs. There are no bands to back anything up, so the paper lining on each friction is what carries the engine and the trailer. The lining is grooved to shed fluid as the pack clamps; when it glazes, the grooves fill, the plate hydroplanes instead of gripping and the computer stretches the shift until the plate overheats further. That is the cycle a fresh module breaks.
Map the slip to the gears first; the overlap tells you which pack is gone. The 4-5-6 clutch is the best-known weak point on these units, and Sonnax ties it to limited piston contact area and a backing plate that bows. A soft 2-3 shift alone is not proof: GM bulletin PIP5429 calls a mild 2-3 flare a normal characteristic. Our 6L90 3-4 clutch failure guide walks the upper-gear patterns and the Silverado 2500 6L90 problems guide covers what HD trucks see most.
The listing names 2006, the launch year of the 6L80 family; the 6L90 itself arrived in 2007 heavy-duty applications. The two units share many friction part numbers but not every plate count, because the 6L90 runs more plates in some packs to handle its torque rating. Before installing, lay out your old frictions pack by pack and match count, outside diameter and tooth count. We cannot confirm the exact count on this board from the photo, so if you want it checked against your unit, send us your year and VIN. Plate counts for 2007-and-newer 6L90s are spelled out on our Raybestos 6L90 friction pack, and the full lineup is on the 6L90 parts page.
| Fits | 6L90 2006 |
| Part type | Clutch Module |
| Condition | New |
| Brand | Borg Warner |
| Ships | From the USA |
| Warranty | 1-year |
The photo shows friction plates only. Plan to reuse good steels or buy new ones, and replace any steel that is blued, warped or heat-checked.
It is listed for the 6L90 from 2006, the year the family launched. Because plate counts differ in some packs between the 6L80 and 6L90, count your old plates against this kit or send us your year and VIN.
Heavy towing on old fluid, apply-circuit leaks at the stator support or pistons, and the well-known 4-5-6 clutch weakness. Fix the leak or the plates will burn again.
At least 30 minutes in clean Dexron VI so the lining is fully saturated before the pack is clamped.
Yes. Clear the adaptive values with a scan tool and complete the adaptive learn so the module relearns fill times for the new clearances.
