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Pontiac Sunfire Problems

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.

(25 people reported this problem)

Pontiac Sunfire Vehicles With This Problem

RepairPal Verified
Average mileage: 109,667 (66,000–160,000)
Drive Train affected: Automatic Transmission
11 model years affected: 1995, 1996, 1997, 1998, more1999, 2000, 2001, 2002, 2003, 2004, 2005
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Viewing 1-9 of 9 comments
Leak in transmission cooler line. Slow leak,nothing too much to be worried about but still needs to be fixed.
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 .
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