Pioneer Cables 748001 Automatic Transmission Gasket Set

Automatic Transmission Gasket Set for GM Applications

Pioneer Cables 748001 is an automatic transmission gasket set for service work on a wide range of GM cars, trucks, vans, and SUVs. It is built for transmission resealing during internal repairs, including leaking transmission service that requires disassembly.

• Automatic transmission gasket set for resealing service
• Includes gaskets, seals, O-rings, pan gasket, rubber lip seals, metal clad seals, sealing rings, and other application-specific components
• Used for overhaul-level transmission repair and internal service
• Fits many Chevrolet, GMC, Buick, Oldsmobile, Pontiac, and Cadillac applications
• Part number 748001 for catalog and fitment lookup

Detailed Fitment and Application

This Pioneer Cables transmission repair kit is listed for 1969-1986 GM vehicles with combination fitment across multiple platforms, including Chevrolet C10, C20, K10, Camaro, Corvette, Malibu, Monte Carlo, Nova, and GMC C1500, Jimmy, and K1500 applications. It also covers Buick LeSabre, Regal, Skylark, Oldsmobile Cutlass, Delta 88, and Pontiac Firebird, LeMans, Grand Prix, and Bonneville models where the transmission configuration matches the listed notes. Part number 748001 is a direct fit reference for many THM250C/M31, THM350, and THM350C applications noted in the fitment data.

This part cross-references no additional part numbers in the provided data.

Common Repair Uses

• Transmission fluid leaks from gasket or seal failure
• Internal reseal service during transmission disassembly
• Pan gasket replacement during transmission maintenance
• Restoration of older GM automatic transmission assemblies
• Service work on THM250C/M31, THM350, and THM350C-equipped vehicles

Installation Notes and Tips

Verify the transmission model and application notes before installation, especially on vehicles with THM250C/M31, THM350, or THM350C callouts. Clean all sealing surfaces thoroughly, inspect hard parts for wear, and replace damaged seals during reassembly. Confirm the vehicle year, make, model, and transmission code against the fitment list before ordering.

Quality Assurance

Pioneer Transmission Repair Kits are offered as pre-packaged service solutions for transmission overhaul and resealing work. The kit format is organized for application-specific transmission service on listed GM vehicles.