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
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.