Calibrated Power 6-Speed Allison Transmission A50/T14 Pre-Tuned TCM DT1150000008001 | 2011-2015 6.6L Duramax LML

Upgrade the reliability and performance of your Allison 1000 transmission with the DuramaxTuner T14 Pre-Programmed TCM. Designed for 2011–early 2015 LML Duramax-equipped Chevrolet Silverado and GMC Sierra HD trucks, this upgraded T14 Transmission Control Module replaces the failure-prone factory A50 TCM while adding custom transmission tuning for quicker shifts, improved drivability, and increased clutch holding capacity.

Each TCM is pre-programmed to your truck's VIN, eliminating the need for dealership programming. DuramaxTuner's custom calibration increases electronic line pressure, optimizes shift timing, and improves torque converter lockup strategy to keep your truck operating in its ideal powerband. Whether your truck is stock or heavily modified, this upgrade enhances transmission performance for daily driving, towing, and performance applications.

Customers can choose between Smooth Shift tuning for stock or lightly modified trucks or Aggressive Shift tuning for trucks equipped with larger tires, upgraded turbochargers, or custom ECM tuning.

Features:

• Upgraded T14 Transmission Control Module replaces the factory A50 TCM
• Pre-programmed to your vehicle's VIN
• Custom DuramaxTuner transmission calibration included
• Faster, smoother shift performance
• Increased electronic line pressure improves clutch holding capacity
• Optimized torque converter lockup strategy
• Improves acceleration and overall drivability
• Helps maintain the engine within its optimal powerband
• Compatible with stock and built Allison 1000 transmissions
• Ideal for towing, performance, and daily driving applications
• Works alongside ECM tuning, throttle boosters, and other performance modifications

Tuning Options:

• Smooth Shift: Best for stock or lightly modified trucks, factory-size tires, box tuners, daily driving, and maximum fuel economy.
• Aggressive Shift: Recommended for upgraded turbochargers, 35-inch or larger tires, custom ECM tuning, or drivers who prefer higher RPM shift points.

Fitment Notes:

• Fits 2011–early 2015 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD equipped with the 6.6L LML Duramax and Allison 1000 transmission.
• Compatible with trucks that have a VIN 10th digit of 9, A, B, C, D, E, or F.
• Not compatible with Chevrolet Kodiak or GMC TopKick C4500/C5500 applications.
• For trucks with an "F" in the 10th VIN digit, verify the factory TCM matches the correct style before ordering.