Pioneer Cables 755078 Automatic Transmission Bushing

Automatic Transmission Bushing for GM Applications

Pioneer Cables 755078 is an automatic transmission bushing for select GM rear-wheel-drive and 4x4 applications from 1969-1986. It is an exact-fit replacement part for the reaction carrier, sun gear to output shaft, and related planetary carrier locations used in THM250C, THM350, THM350C, and THM31/M31 applications where listed.

This part cross-references Four Seasons 33312 and Remy 14882 for the same application.

Key Features

• Exact-fit automatic transmission bushing replacement
• Used in reaction carrier, sun gear to output shaft, and planetary carrier locations
• Fits a wide range of Chevrolet, GMC, Buick, Oldsmobile, Cadillac, and Pontiac vehicles
• Applies to select THM350, THM350C, THM250C/M31 configurations where noted
• Pioneer Cables part number 755078 for catalog and service matching

Fitment Details

• Fits 1986 Chevrolet C10, reaction carrier - sun gear to output shaft; planetary carrier or sun gear.
• Fits 1975-1984 Chevrolet C10, reaction carrier - sun gear to output shaft; planetary carrier or sun gear.
• Fits 1986 Chevrolet C10 Suburban, reaction carrier - sun gear to output shaft; planetary carrier or sun gear; only fits THM350C.
• Fits 1986 Chevrolet K5 Blazer, reaction carrier - sun gear to output shaft.
• Fits 1986 GMC C1500 Suburban, reaction carrier - sun gear to output shaft; planetary carrier or sun gear; only fits THM350C.
• Fits 1984-1985 Buick LeSabre, reaction carrier - sun gear to output shaft.
• Fits 1975-1984 Oldsmobile Cutlass Supreme, reaction carrier - sun gear to output shaft; planetary carrier or sun gear.
• Fits 1977-1984 Pontiac Bonneville, reaction carrier - sun gear to output shaft; planetary carrier or sun gear.
• Fits 1969-1974 Chevrolet Blazer, reaction carrier - sun gear to output shaft.
• Fits 1969-1973 Chevrolet Camaro, reaction carrier - sun gear to output shaft.

What This Bushing Helps Address

• Excess transmission play at the reaction carrier or sun gear area
• Wear at the output shaft support surface
• Noise or rough operation from a worn internal bushing
• Incorrect fitment when rebuilding a THM350 or THM350C unit
• Service replacement needs for older GM automatic transmissions

Installation Notes and Tips

Verify transmission family and application notes before installation, especially on THM350C, THM350, and THM250C/M31 listings. Confirm the bushing location against the original part and inspect the mating shaft or carrier for wear before assembly. For best results, install during a full transmission service or rebuild.

Quality Assurance

Pioneer Transmission Components are positioned as exact-fit replacement parts for service applications, with fitment coverage listed by vehicle, year, and transmission note.