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
Oldsmobile Silhouette Rubber Transmission Cooler Lines Can Leak Fluid
Oldsmobile Silhouette Problem
Visitor, 2000 Oldsmobile Silhouette, 142,000 mi
No real details - one of the cooler lines are leaking at two of the crimp connections. Very slow right now. Standard parts houses don't seem to have replacements.