Transmission Output Seal May Leak Fluid on Chevrolet S10 Blazer

The transmission output shaft seal may leak transmission fluid. On 2WD models, this leak can cause the transmission mount to become oil soaked, which will require replacement of the mount along with the leak repair. On 4WD models, if this seal leaks, the fluid will leak into the transfer case, causing it to become overfull.

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Average mileage: 151,399 (120,000–197,999)
Drive Trains affected: 2WD, 4WD
5 model years affected: 1990, 1991, 1992, 1993, more1994
10 people reported this problem
3 people shared problem details
About every 3 weeks I have to add 1 or 2 quarts of transmission fluid. Its not leaking onto the ground,because I would see it on the snow at home or work! could it be that it is overfilling into the transfer case? if so, how what damage will that cause?
1993 Chevrolet S10 Blazer- 4WD154,000
Transfer case full of ATF...
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