GM 15832205 Transmission Filler Tube for 2001-2007 Silverado

A replacement automatic transmission fluid filler and dipstick tube built to the GM 15832205 pattern. It fits the 2001-2007 GMT800 classic-body trucks: Chevrolet Silverado 1500, 2500 and 3500, GMC Sierra 1500, 2500 and 3500, Chevrolet Suburban 2500 and GMC Yukon XL 2500. The tube is formed steel with a black finish, the same bends as the original, and the welded mounting bracket partway up that bolts to the engine to hold the tube in place.

These tubes fail in a few predictable ways. The bracket weld cracks or rusts through and the tube starts to shake, the lower end corrodes where it meets the case, or the tube gets kinked during engine or transmission work. The result is a fluid leak at the case, a tube that will not hold the dipstick where it belongs, or dirt and water getting into the transmission through a loose fill point. A seeping filler tube is also a common cause of ATF showing up on the exhaust and a burning smell after a drive.

To install: pull the dipstick, remove the bracket bolt, and work the old tube up and out of its bore in the transmission case. Clean the bore, fit a new seal or grommet at the case end (reuse the old one only if it is still soft), push the new tube fully home, then bolt the bracket back up and reinstall the dipstick. Check the fluid level hot and in park after the swap. Match the shape and bracket position against your old tube before you start, since trucks in this range were built with different engines and transmissions.