Pioneer Cables 748021 Automatic Transmission Gasket Set

Automatic Transmission Gasket Set for GM Applications

Pioneer Cables 748021 is an automatic transmission gasket set for service work on a wide range of GM trucks, SUVs, vans, and performance cars. It is built for transmission resealing during internal repairs, including leak correction and disassembly-related service.

• Automatic transmission gasket set for resealing service
• Used for leaking transmission repairs and internal service work
• Application-specific components for the listed vehicles
• Fits many Chevrolet, GMC, Cadillac, Pontiac, and Isuzu models
• Part number: 748021

Detailed Application Coverage

This Pioneer Cables transmission gasket set is intended for vehicles that require transmission disassembly and resealing. It supports service on popular applications such as Chevrolet Corvette, Camaro, Silverado 1500, Tahoe, and GMC Sierra 1500, along with other listed GM platforms. The 748021 part number is also a useful reference when sourcing the correct automatic transmission gasket set for 1993-2004 GM applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Repair

• Transmission fluid leaks at gasket and seal interfaces
• Seepage after transmission teardown or overhaul
• Loss of sealing integrity during internal service
• Maintenance needs on aging 4L60-E-equipped vehicles
• Resealing requirements on Chevrolet Corvette, Silverado 1500, and GMC Sierra 1500 applications

Installation Notes

Verify transmission type and vehicle application before installation. Some listed vehicles have notes that apply only to 4L60-E configurations, including certain 2002 Chevrolet Silverado 2500 and 1993 Cadillac DeVille applications. Clean all sealing surfaces thoroughly and inspect related hard parts before reassembly. Use the vehicle’s service information for torque values and assembly sequence.

Quality Assurance

Pioneer Transmission Repair Kits are offered in multiple service levels, and this gasket set is part of that transmission repair lineup. It is sourced for application-specific transmission service where resealing is required.