8L90 8L45 Automatic Transmission Wiring Harness 24298757 for Chevrolet Cadillac

8L90 8L45 Automatic Transmission Wiring Harness for Chevrolet Cadillac

This automatic transmission wiring harness for Chevrolet Cadillac is a direct replacement part that routes electrical signals and power to solenoids, sensors, and the valve body, enabling proper gear selection and shift performance. It is designed for use with 8L90 and 8L45 transmissions, referencing OEM cross-reference number 24298757.

Overview

This automatic transmission wiring harness for Chevrolet Cadillac is a complete engine-to-transmission wiring assembly, transferring critical data and power to ensure the 8L90 or 8L45 transmission operates precisely. It is built for use in GM vehicles equipped with these eight-speed automatic transmissions, restoring full electrical functionality during rebuilds or replacements.

Built For Performance

• Direct replacement design matching OEM 24298757 fitment
• High-temperature resistant wiring insulation for underhood durability
• Pre-terminated connectors to plug directly into TCM and transmission solenoids
• Shielded circuits to minimize electromagnetic interference
• Contains all necessary harness clips and brackets for secure routing

Fits These Machines

• for Chevrolet Silverado with 8L90 transmission
• for Chevrolet Tahoe with 8L90 transmission
• for Chevrolet Suburban with 8L90 transmission
• for Cadillac Escalade with 8L90 transmission
• for Chevrolet Camaro with 8L90 transmission
• for Cadillac CT6 with 8L90 transmission

On-The-Job Use

• Used during automatic transmission rebuild or replacement on GM trucks
• Wiring installation for transmission control module to valve body connections
• Repairing chafed or broken transmission harnesses in high-mileage vehicles

Specs At A Glance

Good To Know

Q: Will this harness fit my 6L80 transmission? A: No, this harness is specifically designed for 8L90 and 8L45 eight-speed transmissions and will not match the connectors or pinout of a 6L80.

Q: Can I use this harness for a transmission swap into a different vehicle? A: It is intended for original 8L90/8L45 applications, so for swaps, confirm your TCM and vehicle wiring match the same pin configuration before installing.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.