1998 GMC Transmission & Drivetrain

Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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• $20 Summit Bucks

Automatic Transmission Accumulator Pistons, Pinless, Aluminum, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SOX-77998-03K

5.0 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks

Automatic Transmission Rebuild Components, Bearing/Race Kit, Sun/Internal, Center Support/Sun, GM, TH400/4L80-E/4L85-E, Kit

Part Number: SOX-SBK-G10

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks

Automatic Transmission Accumulator Pistons, Pinless, Aluminum, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: SOX-77987-01K

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks

Accumulator Piston, Aluminum, Forward, GM, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74927-AP

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks

Automatic Transmission Bracket and Lever, Shift Cable Mounting Bracket, Steel, Black, 4L60-E/4L80-E, Chevrolet, GMC, Each

Part Number: SOX-34913-01

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks

Automatic Transmission Rebuild Components, Pressure Regulator Spring, High Performance, GM, 4L60-E/4L65-E/4L70-E, Each

Part Number: SOX-77917-10

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

• $20 Summit Bucks