An automatic transmission fluid leak may develop from the rubber section of a transmission cooler line. In some cases the rubber section of hose can be replaced. In others, the complete cooler line must be replaced to correct this type of leak.
Car Problem Reports
Pontiac Sunfire Rubber Transmission Cooler Lines Can Leak Fluid
Pontiac Sunfire Problem
Drive Train Affected: Automatic Transmission
Average Mileage: 99,000 mi (66,000 mi - 160,000 mi)
Lower automatic tranny line was leaking ATF at the rubber-metal junction. Bought replacement ACDelco lines from amazon for 29 dollars and was perfect.and added some tranny fluid dextron/merconIII type .
Visitor, 1997 Pontiac Sunfire, Automatic Transmission, 70,000 mi
Visitor, 1995 Pontiac Sunfire, Automatic Transmission, 160,000 mi
THE UPPER LINE RUSTED AND CORODED OFF AND LEAKED ATF FLUID EVERY WERE HOW CHECK FLUID WHEN PUT FIXED AND PUT BACK IN NO DIPSTICK 97 SUNFIRE 2.2L AUTOMATIC
Visitor, 2005 Pontiac Sunfire, Automatic Transmission, 66,000 mi
hose has some oil on it,power stearing fluid low