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.
Car Problem Reports
Buick Regal Rubber Transmission Cooler Lines Can Leak Fluid
Buick Regal Problem
Average Mileage: 118,511 mi (95,500 mi - 141,522 mi)
Visitor, 1990 Buick Regal, 95,500 mi
Trans cooler line leaked. Trans quit working while I was in ongoing traffic in rush hour. (LOL) Had to have car towed. Hoses easily came off, even with clamp(s) still tight. Had to replace clamp(s) and fluid.