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2015-2016 Allison T87 TCM

2015-2016 Allison T87 TCM
Pricing: $750.00
5 5 3

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Our brand new Pre-Programmed TCM comes with your choice of either OEM factory calibrations or our Enhanced calibrations. 

Benefits of our Enhanced TCM include:

  • Improved throttle response.
  • Revised shift strategies for better shift rpm and quality.
  • Improved Torque converter lock-up.
  • Increase MPGs.
  • Extend transmission life.
  • Works with factory or aftermarket ECM programming.  

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

No dealer visit.  

No core required. 

Lifetime Warranty


Fits Chevrolet and GMC 2500HD and 3500HD Pickup and Cab&Chassis trucks.  10th digit of VIN being a F or G.  Trucks with 10th digit being a F please visually inspect your TCM to see that it matches the one in the picture.  TCM is located on the fan shroud by the drivers side battery.  The late 2015s came with the T87 TCM.  Early 2015s came with the A50.


The T87 Transmission Control Module found in the 2015-2016 2500/3500 Duramax is prone to failure. The internal circuit board fails and is not serviceable.  When this failure occurs you may observe messages such as Range Shift Inhibited, Service Brake System, Service stabilatrak, or might experience loss of gear shift indicator on dash, slamming into Drive or Reverse, and DTC U0101 for loss of communication with TCM.


 This repair at a dealership can cost upwards of $1000 and can take a couple days to get repaired.  Our TCM will have you back on the road quickly while saving you money. Plus you'll receive a much better warranty.


Shipping information

Cutoff time for same day shipping is 3pm Central Time.  If ordering Next Day Air note that NDA does not deliver on Saturday.  For Saturday delivery or if you have any questions please give us a call.  815-977-5865


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.
  • W7.0000” x H7.0000” x L3.0000”

Customer Reviews

Comment Total Reviews (3)

Custom DDP tune
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: Dan's Diesel Performance

Love the product you can definitely feel the change helped a lot and came in really fast!

good so far, but...
  • Currently 4/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: Dan's Diesel Performance

super fast shipping, it was delivered within 4 days. the hardest part was figuring out how to unplug the old tcm, youtube not super helpful. that said, this unit eliminated my transmission from shifting into overdrive too early, pulling hills around my house is much more pleasant when the truck isn't trying to go between gears every 5 seconds, BUT, it almost seems as if it's just in permanent tow/haul mode, haven't seen it shift into 6th gear as of yet, so claim about increased fuel mileage will take awhile to prove. i'll start pulling my 12,000 pound trailer next month, we'll see how that works out.

Great customer service
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: Dan's Diesel Performance

TCM performs exactly as described. I was having issues with my truck shifting hard after it was tuned. This aftermarket TCM took care of that. Truck drives 10000 times better. Big thanks to JD Kirane for the excellent customer service. I called him 3 different times with questions and he was always a pleasure to speak with! Thanks again JD!!!!

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