Product Description
Modernize Your Allison Transmission Control with ATS TCM Upgrade
The ATS 601-920-4344 TCM Upgrade Kit allows you to convert your factory A40 transmission control module to the more advanced T87 controller on 2009–2010 6.6L Duramax 2WD trucks. This upgrade unlocks improved tuning capability, enhanced shift control, and better overall transmission performance.
The factory A40 controller has limitations when it comes to tuning flexibility and advanced transmission strategies. ATS solves this by upgrading to the T87 platform, which is widely used in newer applications and offers greater control, improved communication, and more precise shift management.
This upgrade is essential for performance builds, custom tuning, or anyone looking to bring modern transmission control technology to their Duramax.
Key Features:
- Converts A40 TCM to advanced T87 controller
- Improves tuning flexibility and compatibility
- Enhances shift quality and transmission control
- Supports modern tuning platforms and strategies
- Designed specifically for Duramax Allison applications
- Ideal for performance, towing, and custom builds
FAQ
What is the benefit of upgrading to a T87 TCM?
The T87 offers improved tuning support, better shift control, and compatibility with newer tuning software compared to the factory A40.
Is this required for custom tuning?
In many cases, yes. The T87 controller allows for more advanced tuning strategies not available with the A40.
Will this improve transmission performance?
Yes, when paired with proper tuning, it can significantly improve shift quality and overall drivability.
Is this plug-and-play?
Installation may require programming and proper setup; professional installation and tuning are recommended.
Fitment:
- 2009–2010 Chevrolet Silverado 2500HD / 3500HD (2WD)
- 2009–2010 GMC Sierra 2500HD / 3500HD (2WD)
- 6.6L Duramax Diesel Engine (LMM)
- Allison Transmission with A40 TCM (conversion to T87)
Note: This kit is for 2WD applications only. Verify compatibility and tuning requirements before installation.
Specifications for ATS 601-920-4344
| ATS 601-920-4344 Product Specifications | |
|---|---|
| Part Number | 601-920-4344 |
| Brand | ATS Diesel Performance |
| Product Type | TCM Upgrade Kit (A40 to T87) |
| Controller Type | T87 Conversion |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax (LMM) |
| Vehicle Fitment | 2009–2010 Silverado / Sierra 2500HD & 3500HD (2WD) |
| UPC | N/A |
| GTIN | N/A |
| Shipping Weight | Approx. 5 lbs |
| Shipping Dimensions | Approx. 10" x 8" x 4" |
| Core Charge | Core Does Apply |
| California Prop 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
