TC Remanufacturing GM15403 Automatic Transmission Torque Converter

Automatic Transmission Torque Converter for GM Applications

TC Remanufacturing GM15403 is a standard replacement automatic transmission torque converter built for GM vehicles that use the 24279497 converter code. It features an 11.08-inch converter diameter, 11.5-inch bolt circle, 1.702-inch pilot diameter, and 1.109-inch pilot length for application-specific fitment.

With a lock-up design, low stall characteristics, and a 36-spline hub, this torque converter is built for direct replacement use in select Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Corvette, Chevrolet Camaro, GMC Savana 2500, GMC Savana 3500, Chevrolet Express 2500, Chevrolet Express 3500, GMC Yukon, and GMC Yukon XL applications.

Key Features

• Part number: GM15403
• Automatic transmission torque converter
• Standard replacement grade
• Lock-up type: Yes
• Low stall calibration
• 11.08-inch converter diameter
• 11.5-inch bolt circle
• 1.702-inch pilot diameter
• 1.109-inch pilot length
• 36-spline hub with flats/step/flange design
• Mount plate with 6 pads and nuts
• 10mm x 1.5 mounting thread size
• Converter code: 24279497

Detailed Description

TC Remanufacturing GM15403 is an automatic transmission torque converter intended for GM drivetrains that require the 24279497 converter code and the listed mounting dimensions. The lock-up design supports controlled coupling in the transmission, while the low stall specification helps maintain drivability in applications that call for a standard replacement converter. If you are replacing a worn unit in a Chevrolet Silverado 1500 or GMC Sierra 1500, this part number GM15403 provides the core fitment details needed for a correct match.

This part cross-references GM OE application code 24279497 for the same application.

What It Helps Address

• Shudder or slip related to a worn torque converter
• Incorrect lock-up operation in the transmission
• Vibration caused by converter wear or imbalance
• Fitment issues when the bolt circle or pilot dimensions do not match
• Driveability problems tied to an incorrect stall characteristic

Installation Notes and Tips

Verify the 11.5-inch bolt circle, 1.702-inch pilot diameter, and 1.109-inch pilot length before installation. Confirm the transmission application uses converter code 24279497 and the 36-spline, lock-up configuration. Always compare the original converter dimensions and mounting style to the replacement part number GM15403 before assembly.

Quality Assurance

TC Remanufacturing supplies this torque converter as a standard replacement part for GM applications. Confirm all transmission and converter specifications against the vehicle build data to ensure proper installation and operation.

Vehicle Fitment

• Fits 2016-2021 Chevrolet Silverado 1500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2017-2020 GMC Savana 2500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2017-2020 GMC Savana 3500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2015-2020 GMC Sierra 1500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2015-2019 Chevrolet Corvette, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2018-2019 Chevrolet Express 2500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2018-2019 Chevrolet Express 3500, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2016-2018 Chevrolet Camaro, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2015 GMC Yukon, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code
• Fits 2015 GMC Yukon XL, N/A. Fitment Note: 11.5" Bolt Circle, 1.702" Pilot Diamter, 24279497 Converter Code