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2001-2005 Allison AL5 TCM

Plug & play AL5 TCM for the 2001-2005 6.6L Chevrolet/GMC 2500HD/3500.
Pricing: $675.00

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- Enhanced or Factory Calibration? -
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The AL5 Transmission Control Module is found in the 2001-2005 2500HD/3500 Duramax with the Allison Transmission. 

We offer a Pre-programmed TCM which comes with either factory calibrations or our custom EFILive calibrations.

Benefits of our custom tuned TCM include:

  • Revised shift strategies for better shift RPM & quality.
  • Improved torque converter lock-up.
  • Works with factory or aftermarket ECM programming.

This plug & play TCM is delivered right to your door and takes roughly 5 minutes to install.

No dealer visit required.

No core required.

1 Year Warranty


Shipping Information:

Cutoff time for same day shipping is 3PM CST. If ordering Next Day Air be advised that NDA does not deliver on Saturday. For Saturday delivery option, please call our office at 815-977-5865 and speak with any member of our experienced staff to get your order processed quickly and efficiently.


Q: Does this TCM require me to get it programmed at a dealership?
A: No. Our TCM comes pre-programmed. No dealer visit needed.

Q: How long does it take to install?
A: The TCM can be installed in under 5 minutes with 10mm socket and ratchet.

Q: Do I need to unhook my batteries to install?
A: No. The TCM can be swapped with batteries hooked up.

Q: I have a tuner on my truck. Which TCM should I order?
A: Whether your truck is bone stock or tuned we recommend the custom tuned version. It’s going to improve the way your truck performs and responds.

Q: Does the tuned TCM help with fuel economy?
A: We don’t make any claims to fuel economy gains, but some customers have reported an increase. This would be due to the more efficient power transfer.

Q: What is the warranty?
A: One year unlimited miles against defects.

Shipping Information

  • Item Requires Shipping
  • 6.0 lbs.
  • W10.0000” x H10.0000” x L5.0000”

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