4L80E Clutch Module 1995, new and ready to install. Fits the 4L80E. Ships fast from the USA.
A 4L80E from the second half of the 1990s that now slips into second, bangs into gear late or runs hot under a trailer usually has frictions that have given up. This is a new aftermarket friction module, reference R34119, the same configuration Raybestos catalogs as RCP96-075. It is built for the later 4L80E and 4L85E with four intermediate clutch plates, the design GM moved to during the 1995 model year. Trucks that use it include the Chevrolet and GMC 2500 and 3500 pickups, Suburban 2500, Express and Savana vans and the Hummer H1.
Second gear in a 4L80E comes from the intermediate clutch working with the intermediate sprag to hold the sun gear. It is applied for every upshift past first, so it sees a lot of work, and it is the pack GM revised in 1995. Units built after that change use four intermediate frictions, and this module is laid out for them. Using an early-style pack in a late unit, or the other way round, leaves the stack height and clearance wrong, and the transmission slips or drags in second right away. The rest of the module covers the forward, direct, fourth and overrun clutches, so every lined plate in the unit is new after the rebuild.
Check the fluid and the pan first. Lining flakes and a scorched smell confirm the clutches are damaged, but slip can also come from a weak converter clutch, so code 1870 alone is not proof the clutch packs are the cause. A line pressure test separates the two. On towing and plow trucks, heat damage to the overdrive roller clutch inside the overrun drum is common too and should be checked during the teardown. Our 4L80E common problems guide lays out the checks, and the Express van 4L80E guide covers what hard-working vans do to these units.
This listing is for the 1995 model year, and the module is designed for 4L80E and 4L85E units built after the mid-1995 intermediate clutch change and later. That makes 1995 the year to double-check. Look at the build date on the transmission ID tag, or count the intermediate frictions when you take the old pack apart: four plates means this module is correct. An early 1995 unit built before the change takes the 1991 to early 1995 4L80E friction module. When in doubt, send us your year and VIN. More parts for this unit are on the 4L80E collection page.
| Fits | 4L80E 1995 |
| Part type | Clutch Module |
| Condition | New |
| Brand | OEM |
| Reference | R34119 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Read the build date on the transmission ID tag, or count the intermediate frictions when you take the pack out. This module is for the later design with four intermediate plates. If you cannot tell, send us your year and VIN.
Yes, the four-intermediate design carried on after 1995, so this configuration is also used in later units. We list it here for the 1995 model year because that is the year with the split.
No. GM code 1870 means the computer saw slip it did not expect. A worn converter clutch can set it as well as worn clutch packs, so confirm with a pressure test and a pan inspection.
No, this is the friction module only. Check your steels for flatness and heat marks and replace any that fail.
Dexron VI, GM's current fluid for the 4L80E. Use it both to soak the new frictions and to fill the unit.
