Cast aluminum flexplate inspection cover with bolts for a 4L80E bolted to an LS 4.8/5.3/6.0/6.6L, replacing GM 19259119 and 15765623.
Pulled a 4L80E out of a 6.0L Silverado, Sierra or Express van and the lower bellhousing cover was cracked, missing or never went back on? Or building an LS swap behind a 4L80E and finding the old small-block cover does not line up with the LS block? This is the cast aluminum flexplate inspection cover, with its mounting bolts, that closes off the bottom of the bellhousing between an LS-family V8 and the 4L80E. It replaces GM 19259119 and 15765623.
The 4L80E bellhousing is open at the bottom where it meets the back of the engine. Behind that opening are the flexplate, its starter ring gear and the bolts that hold the torque converter to the flexplate. The cover bridges the gap between the engine and the transmission flanges so road water, salt, mud and gravel thrown off the front tires cannot get into that space. On these heavy-duty trucks and vans that spend their life towing, plowing or working job sites, an open bellhousing collects packed dirt quickly. It also keeps hands and tools away from a spinning flexplate when someone is working under the truck with the engine running. GM sells 19259119 as the attachment package for its crate 4L85E, which is why it is the number LS swappers look for: it is the cover that matches an LS block to the big 4L80E family case.
A rattle from the bellhousing area is not always the cover. A cracked flexplate or loose converter bolts make a similar knock, and on 2000 and later 4L80E trucks a failing converter clutch can produce shudder and codes that get mistaken for a driveline noise. Pull the cover and turn the engine over by hand to inspect the flexplate around the crank bolts and every converter bolt. If the transmission came out for a deeper problem, our 4L80E common problems and fixes guide covers converter clutch and overdrive failures, and the 4L80E 3-4 clutch failure guide explains the most common reason these units get pulled.
Listed for LS-engine 4L80E applications: 1999-2007 Silverado and Sierra 2500/3500 6.0L, 2000-2007 Suburban and Yukon 6.0L, 2001-2005 Tahoe, 2002-2005 Escalade 6.0L, 2000-2007 Savana and 2003-2009 Express with the 4.3L, 4.8L, 5.3L, 6.0L or 6.6L. The key is the transmission, not the model name. Most half-ton Tahoes and the Escalade were built with the lighter 4L60E family, so check the transmission ID tag on the case and make sure you have a 4L80E or 4L85E before you order. On the vans, GM paired the 4L80E with several engines, so match the engine family as well. Swappers should confirm the block is a Gen III or Gen IV LS. If anything is unclear, send us your year and VIN, or photos of the engine and transmission flanges, and we will confirm it. More parts are in our 4L80E collection.
With the transmission out, it is the right time to do the service work you cannot reach later. Put a fresh 4L80E filter and gasket kit in before it goes back, and if the unit came out because it was slipping, the 4L80E master rebuild kit for 1999 units covers the soft parts for a full overhaul. Refill with DEXRON-VI and check the level hot.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for the 4L80E, which has a larger bellhousing than the 4L60E. If your truck has a 4L60E or 4L65E, this is not the right cover. Check the transmission ID tag on the case before ordering.
Yes, that is one of the most common uses. GM catalogs 19259119 as the attachment package for its crate 4L85E. Confirm the engine is a Gen III or Gen IV LS and that the transmission is a 4L80E or 4L85E bellhousing.
Yes. The cover ships with a set of flange bolts. Start them all by hand before tightening any of them.
It will run, but water, salt and gravel get into the flexplate and converter area, the converter bolts corrode, and debris can damage the starter ring gear. On a truck that sees bad roads or job sites it is worth replacing.
Inspect the flexplate for cracks around the crank bolts, check that the converter is fully seated in the pump before mating the transmission, replace the filter and pan gasket, and refill with DEXRON-VI checked at operating temperature.
