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Genuine AC Delco NEW 2006-2010 Allison A40 TCM

ACDELCO-A40 24256864
Brand new plug & play A40 TCM for the 2006-2010 6.6L Chevrolet/GMC 2500HD/3500.
Not Available
Pricing: $2,995.00


Brand new A40 transmission control module by AC Delco.

2 Year unlimited mile warranty.

Available only Online

This will work on 2009 and 2010 LMM trucks in place of the A50 TCM.  


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 a small flat screw driver.

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: The purchaser receives a Lifetime warranty on the TCM against defects.

Q: Can I return the TCM if it doesn't fix my trucks problem?
A: No. Once the TCM is installed it can not be returned. We recommend proper diagnosis before placing your order. We are here to help if you have any questions.


Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W9.0000” x H8.0000” x L4.0000”

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