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.Google+
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.