Transmission Fluid Leak From Cooler Line on Pontiac Sunfire

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 101,333 (66,000–160,000)
Drive Train affected: Automatic Transmission
11 model years affected: 1995, 1996, 1997, 1998, more1999, 2000, 2001, 2002, 2003, 2004, 2005
21 people reported this problem
Viewing 1 - 7 of 7 comments
Leak in transmission cooler line. Slow leak,nothing too much to be worried about but still needs to be fixed.
Not fixed, can see fluid leaking from hose, also transmission fluid leaking..
Tranny cooler line leak
Belt tensioner
A/c compressor
Power steering line failure
Alternator
Thermostat housing
Etc........
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 .
LOWER LINE
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
hose has some oil on it,power stearing fluid low