2005-08 Allison 6 Speed TCM A40 15902362

2005-08 Allison 6 Speed TCM A40 15902362

Regular price$1,995.00
Core Deposit: $100.00
Shipping calculated at checkout.

  • In Stock
  • Inventory on the way

Make Chevrolet
Model Silverado 2500/3500
Sierra 2500/3500
Part Number[s]
Engine Size 6.6L Duramax [LLY, LBZ, LMM]
Part Type Transmission Control Module [TCM]
Condition Remanufactured
Warranty Lifetime Warranty
Core Exchange Required? Yes
Programming Required? Plug and Play Installation*

*Please provide VIN number during checkout to ensure proper programming and calibrating is performed.

Send in your TCM for repair - $1,295

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Customer Reviews

Based on 1 review
Steve Bergman
TCM or junk my truck?

What happens when your TCM fails and there are no new OEM units? Do you want to take a big chance and try one out of a junkyard for $1000- $3000+ and no guarantee? Without a TCM your truck doesn’t move! Or do you trust a company like Goecm that offers a remanufactured unit with a LIFETIME guarantee?
So, my 2006 D code was getting a “low fuel rail pressure” CEL while towing under load and would go into limp mode. That really sucks when you’re towing in traffic and have to find somewhere to pull over and stop. The root cause of this may be due to the CP3 getting weak. When I would stop to reset the CEL on my Banks Economind tuner the shift selector would read “Shift Range Inhibited” and would not allow the transmission to engage until I put the shifter in manual shift mode. As long as I towed in manual shift and kept it out of 6th gear it was rare to get the CEL. My fear wasthe TCM would totally fail and no way the truck would move.
I like my truck and spending $3000 to keep it dependable is easier to swallow than having to scrap it and find a replacement. I was impressed with the answers from Goecm, so I ordered the TCM. I didn’t send in mine as a core because I know it will work in a pinch and I won’t be stuck IF the new one fails. I haven’t towed with the new TCM yet but I put it and the skinny pedal through a hard workout. Passed with flying colors. If you like your truck and are suspect of the TCM you may want to talk to Goecm. Yes, I recommend Goecm and NO, I don’t work for them. They’re in Texas and I’m retired in Arizona. What they do is way above my pay scale!
Hope this helps you with your decision

GoECM Remanufacturing

The Process

Since 1997, GoECM has striven to meet the particular needs of car and truck owners. We are a remanufacturer of OEM modules. Each module is completely disassembled, meticulously examined, assessed and remanufactured using only high-quality components, incorporating the latest design upgrades and restoring the control module to OEM specifications.

Products that

Exceed expectations

We extensively research and test each product we offer and limit our selection to the manufacturers and applications we have perfected. This allows us to have the product knowledge we need to satisfy our customers. Each unit is factory tested to not only meet but exceed OEM specifications.



Our customer service staff and sales representatives are trained experts committed to helping you find the right engine control module for your specific application. If we can't answer your question, we'll go out of our way to find out. Our customers always come first and we want you to be pleased with our service.