6L45 Shift Kit

Overview

This is a shift correction and reprogramming kit for the GM, Chevrolet, GMC, Cadillac 6l45 automatic transmission. Built to OEM specification and engineered as a direct-fit replacement for a professional-grade 6l45 repair or rebuild. Every 6l45 order ships fast and is backed by our support team.

What's Included

• recalibrated valve-body springs and valves
• checkballs and separator-plate components as applicable
• step-by-step installation instructions

Fitment

Fits GM, Chevrolet, GMC, Cadillac vehicles equipped with the 6l45 automatic transmission. Please confirm your transmission model and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this 6l45 part when you experience:

• soft, mushy or delayed shifts
• slipping or shift flare between gears under load
• harsh or erratic shifts and shift-related codes
• clutch and band burnup on towing or high-power builds

Specifications

• Transmission: 6l45

Quality & Service

In-stock parts ship fast; special-order items ship within 3 business days. Free shipping on orders over $70. Backed by Core Transmission Parts — your source for 6l45 transmission parts.