Car Problem Reports

GMC Sonoma Transmission Output Seal May Leak and Mount Replacement

GMC Sonoma Problem
11 Reports
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Model Years Affected: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Drive Trains Affected: 2WD, Manual Transmission

Average Mileage: 176,666 mi (100,000 mi - 300,000 mi)


A fluid leak may develop from the transmission output shaft seal. This leak may cause the transmission mount to become oil soaked and require replacement of the mount along with the leak repair.

  • Visitor, , 2WD, 300,000 mi

    When I am putting my truck in first it won't go it will make a loud grinding sound an were does the trans. mission fluid add at

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