Car Problem Reports

Buick Park Avenue Rubber Transmission Cooler Lines Can Leak Fluid

Buick Park Avenue Problem
21 Reports
Me Too

Model Years Affected: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004

Average Mileage: 146,330 mi (97,650 mi - 196,000 mi)


The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.

  • Visitor, , 196,000 mi

    Transmission cooler lines leak. Have not fixed it yet.

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  • Visitor, , 158,000 mi

    Park Avenue Ultra leeking at the rubber hose more like seepping through the cracks in the hose and at the double clamps. Replaced with a one piece no clamps compression fittings upper part# 624-150 amd lower part #624-151 $26.90 parts came in sealed plastic bags for both and $9.95 FedX shipping OH to AZ total parts cost $36.85 plus dextron transmission fluid as needed.

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  • Visitor, , 160,000 mi

    Lower (outlet) line seen dripping fluid at the pressed joint between the rubber hose and the metal pipe. Leak appeared at the start of Winter. Replaced with $17.50 Dorman 624-151 part.

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