Transmission Fluid Leak From Cooler Line on Buick LeSabre

Problem Description and Possible Solution

The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 120,269 (80,000–210,000)
15 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005
37 people reported this problem
Viewing 1 - 10 of 10 comments
Dealer says transmission cooler lines leaking and needs to be replaced. I didn't get an estimate on the cost...Does anybody out there know how much?
Both transmission cooler lines were leaking. Both lines were replaced at a Buick dealer service department.
Transmission cooler lines started to leak at 142000 miles. Must fix soon...............
Leaking transmission fluid
Lines near rad are very weepy. I have not replaced them yet. 110,000mi.
I purchased my 94 LeSabre brand new. It has always been garage kept and adult driven. Despite my providing exceptionally good maintenance to this car, my transmission cooler lines failed three different occasions. Yes, I understand that stuff "Made in China" is garbage; however, these replacement tranny cooler lines were and are the only option available - which stinks!
Rubber Transmission cooler lines leak
My parents bought our Lesabre used at about 78,000 miles. We've had it for about 2 years now. A few weeks ago we noticed a leak. At first we thought it was oil, but today I hoped under the car only to realize it was the inlet hose for the tranny fluid to cool. The leak is at the . crimp fitting where the hard line meets rubber. Also there's multiple oil leaks. Great!
I replaced mt 1994 LeSabre's transmission cooler lines THREE times due to the same exact problem.
Leak where hard line meets hose.