ATS TCM Upgrade, A50 To T87 4-Wheel Drive For 2015 GM 6.6L Duramax transmission Corrosion resistant black chromate finish

Corrosion resistant black chromate finish with laser engraved markings

Can be used in conjunction with Edge or other performance products to read vital engine data

When you increase boost without increasing rpms or drive pressure

primer and paint

Perfect for grabbing gear out of the toolbox or lighting the camp area

ATS TCM Upgrade, A50 To T87 4-Wheel Drive For 2015 GM 6.6L Duramax transmission Corrosion resistant black chromate finishThe A50 and T14 TCM that is used to control the Allison 6 speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short out the entire module. In 2022, Allison sent out a letter (SIL 15 1K2K 22) announcing the discontinuation of support for the A50 and T14 TCMs. This effectively left over 10,000 Duramax owners out of their trucks. Some of the