GM 6-Speed Transmission Programming

(6L80 / 6L90 Module Setup & Configuration)

When a GM 6-speed transmission is replaced, the internal control module must be properly programmed and configured to the vehicle. Without this step, the vehicle may not shift correctly — or may not move at all.

We provide mobile transmission programming services to get your vehicle back on the road quickly and correctly.

What This Service Includes

We perform factory-level programming and setup for GM 6-speed transmissions using OEM-compatible software.

• TCM programming with correct calibration files

• VIN writing and module setup

• Fast Learn / Adaptation Reset procedures

• Clearing transmission-related fault codes

• Verifying proper communication with ECM/BCM

When Programming Is Required

This service is needed anytime:

• A transmission has been replaced (new or used)

• A valve body or internal TCM has been replaced

• The vehicle will not shift or is stuck in limp mode

• You have communication or configuration codes

Common Issues Without Programming

• No movement or stuck in gear

• Harsh or erratic shifting

• Transmission in limp mode

• Warning lights and stored DTCs

• Improper gear ratios or shift timing

Supported Transmissions

• GM 6L80

• GM 6L90

Common in:

• Silverado / Sierra

• Tahoe / Suburban

• Yukon / Escalade

(Approximately 2007–2026 models)

OEM-Level Tools

We use factory-level software and pass-thru equipment to ensure programming is completed correctly — just like the dealership, without the wait.

Mobile Service – We Come to You

No towing required.

We perform programming at:

• Your home

• Your workplace

Fast Turnaround

Most programming jobs are completed in 30–60 minutes, including setup and verification.

Service Area

Serving:

• Wake County

• Johnston County

• Durham County

• Harnett County

• Surrounding areas

Schedule Service

If your transmission was just installed and needs to be programmed, we can handle it quickly and correctly the first time.