Transmission Oil Cooler Line for 1996-2002 Chevy Express Savana

This is the formed steel-and-hose transmission oil cooler line assembly that carries fluid between the auxiliary cooler and the transmission on the driver side of full-size GM vans. It replaces GM 15052182 and 15153154, Dorman 624-164, and 5801175, and comes pre-bent to the factory routing so it drops in without cutting or flaring.

Fitment: 1996-2002 Chevrolet Express 2500 and 3500, 1998-2002 GMC Savana 1500, and 1996-2002 GMC Savana 2500 and 3500. Overall length is about 66.9 inches. Compare the bends and end fittings to your old line before you install it.

These lines usually fail where the rubber section is crimped to the steel tube, or where the steel rusts through along the frame rail. The signs are ATF drips under the driver side, a wet crossmember, fluid on the exhaust and a burning smell, and a low dipstick reading that keeps coming back. Running a van low on fluid slips the clutches and cooks the transmission, so a leaking cooler line is worth fixing right away.

To install: drain or clamp off what you can, release the line at the transmission fitting with the correct cooler line disconnect tool, unclip it from the body, and remove it at the cooler end. Route the new line through the same clips, seat both ends until they lock, then start the engine and top off the fluid hot in Park while checking both connections for seepage.