TC Remanufacturing HDB85JMBX Automatic Transmission Torque Converter

Heavy Duty Lock-Up Torque Converter

The TC Remanufacturing HDB85JMBX is a heavy duty automatic transmission torque converter built for GM trucks, SUVs, and performance applications that use a 36-spline, lock-up design. With a 12.500-inch converter diameter and a 1400-1600 stall range, it is suited for Chevrolet Tahoe, GMC Sierra 1500, and related applications that need controlled engagement and dependable drivability.

Key Features

• Part number HDB85JMBX from TC Remanufacturing
• 12.500-inch converter diameter with 11.000 bolt circle
• Lock-up converter with carbon woven friction single clutch
• Heavy duty construction with billet lid
• Slotted / stepped hub type
• 10mm x 1.5 mounting thread size
• 1.701 pilot diameter and 1.000 pilot length
• 36-spline configuration
• 1400-1600 stall speed range
• No ring gear

Application Details

This torque converter is listed for a wide range of Chevrolet, GMC, Cadillac, Hummer, and Pontiac vehicles, including 2017-2020 Chevrolet Tahoe, 2018-2020 GMC Sierra 1500, 2017-2020 GMC Yukon, and 2017-2020 GMC Yukon XL. It also fits 2009-2017 Chevrolet Silverado 1500, 2007-2016 Chevrolet Silverado 2500 HD, 2007-2016 Chevrolet Silverado 3500 HD, 2007-2016 GMC Sierra 3500 HD, 2007-2015 Cadillac Escalade, 2010-2015 Chevrolet Camaro, and other listed GM platforms. Fits 2017-2020 Chevrolet Tahoe, N/A; Fits 2018-2020 GMC Sierra 1500, N/A; Fits 2017-2020 GMC Yukon, N/A.

What This Part Helps Address

• Shudder or inconsistent lock-up operation in the torque converter
• Excessive slip during acceleration or cruising
• Harsh or uneven engagement from a worn converter clutch
• Drivability issues tied to a failing automatic transmission torque converter
• Fitment needs for GM 36-spline lock-up converter applications

Installation Notes and Tips

Verify converter diameter, spline count, pilot dimensions, bolt circle, and mounting thread size before installation. Confirm transmission compatibility and match the listed stall range to the vehicle’s intended use. For best results, inspect the transmission cooler, lines, and fluid condition during replacement to reduce the chance of repeat contamination.

Quality Assurance

TC Remanufacturing supplies remanufactured transmission hard parts for service and replacement applications. This HDB85JMBX torque converter uses a heavy duty billet lid and carbon woven friction single clutch construction for a service-focused fitment profile across listed Chevrolet Tahoe, GMC Sierra 1500, and other GM applications.