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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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Description
Synapse Auto Remanufactured Allison Transmission Control Module (TCM) 09-15 GM 6.6L DuramaxOver time, the factory TCM (Transmission Control Module) that controls the Allison transmission behind your Duramax engine is known to fail. Symptoms of this type of failure include losing the "PRNDL" display on your dash, check engine lights, and even limp mode. This is a direct replacement, pre programmed TCM from the electronics experts at Synapse Auto that plugs right in place of your stock unit for a simple repair. If you're experiencing any of
Over time, the factory TCM (Transmission Control Module) that controls the Allison transmission behind your Duramax engine is known to fail. Symptoms of this type of failure include losing the "PRNDL" display on your dash, check engine lights, and even limp mode. This is a direct replacement, pre-programmed TCM from the electronics experts at Synapse Auto that plugs right in place of your stock unit for a simple repair. If you're experiencing any of these issues, feel confident in replacing your TCM with this unit from Synapse.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 922 reviews
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Product Reviews
★★★★★ 5
Looks good and fits
It looks good and fits perfectly; other than that, I have no idea how to tell if it's better or worse than anything else.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Happy with purchase
Works as well at the fraction of the price. Very happy with the purchase. Very easy to install
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Great OEM replacement at hlaf the cost
Looks exactly like the OEM filter a quality product. it is the same size fit and performance. Filter replacement is fast 10 min tops, it's crazy how much a dealer charges to replace it.
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Reviewed in the United States on April 15, 2025
★★★★★ 5
As good as Honda OEM
Perfect fit. Lasts as long as OEM for 25% of the price.
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Reviewed in the United States on December 27, 2025
★★★★★ 5
Great fit
Perfect fit. FYI - I bought the exact same one on EBAY FOR $11.78
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Reviewed in the United States on May 2, 2026