Pioneer Cables 760011-5 Automatic Transmission Detent Cable Seal

Automatic Transmission Detent Cable Seal for GM Applications

Pioneer Cables 760011-5 is an exact-fit automatic transmission detent cable seal for service work on a wide range of classic GM vehicles. With precise dimensions and OE-style replacement construction, it is built for the detent control cable top hat boot location used on many 1978-1986 Chevrolet, GMC, Buick, Oldsmobile, Pontiac, and Cadillac applications.

Key Features

• Inside diameter: 0.375 in.
• Thickness: 0.4375 in.
• Outside diameter: 0.625 in.
• Exact-fit replacement for the automatic transmission detent cable seal location
• Matches applications using the detent control cable top hat boot seal
• Pioneer Cables 760011-5 for direct service replacement

Product Details

This transmission seal is made for vehicles that use a detent control cable seal at the top hat boot area of the automatic transmission. Pioneer Transmission Components are built as direct replacement parts, and this seal is sized for the specified GM fitments across Chevrolet C10, C20, K10, G10, GMC C1500, Jimmy, and related models. It also cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible vehicle coverage includes Fits 1986 Chevrolet C10, Fits 1982-1984 Chevrolet C10, Fits 1986 Chevrolet C20, Fits 1982-1984 Chevrolet C20, Fits 1986 Chevrolet K10, Fits 1982-1983 Chevrolet K10, Fits 1986 GMC C1500, Fits 1982-1984 GMC C1500, Fits 1986 GMC K1500, and Fits 1986 GMC Jimmy, along with additional Buick, Oldsmobile, Pontiac, Cadillac, Chevrolet, and GMC models listed in the fitment data. Use part number 760011-5 when searching for a detent cable seal for GM automatic transmission service.

What This Part Helps Address

• Transmission fluid seepage at the detent control cable seal area
• Worn or hardened top hat boot sealing surfaces
• Service replacement needs during transmission maintenance
• Fitment issues when restoring older GM automatic transmission assemblies
• Leak repair at the detent cable pass-through point

Installation Notes and Tips

Verify transmission family and application before installation, especially on listings that note THM250C/M31, THM350, or THM350C coverage. Confirm the seal dimensions against the original part and inspect the cable and housing surfaces for wear, scoring, or contamination before assembly. Clean the sealing area thoroughly so the new seal seats evenly.

Quality Assurance

Pioneer Cables positions this part as an exact-fit replacement component for transmission service, with dimensions specified for accurate application matching. Part number 760011-5 is intended for direct replacement use in the listed GM fitments.