Hey everyone I have been working on a standalone wire harness this last month for a customer BKFABWORKS out of TN. The goal is to take a 2013 LML Allison 1000 4x4 transmission and mount it behind the 5.9L 12V Cummins. The customer supplied me with a TCM / ECM / and various wire harnesses removed from a 2004.5 LLY Duramax & LB7 Duramax trucks. I started off tearing down the harnesses and getting a base to build off. At first I took just the TCM side of the harness and made it standalone using a core Allison I have on a stand. With this setup I tested all the sensors and inputs with a bench valve body & range sensor I have set up to make sure I had control. After I finished testing I said why not take it one step farther and I started to incorporate more systems. I then took the LLY ECU and linked it in-line with my standalone TCM setup now I have more inputs for sensors and live data I can add to the 5.9L engine for use with a Edge CTS or comparable devices via OBD2, something the stock communications system has no access to due to the trucks year being a 1995 model. After I had throttle input & all the associated data to run the Allison 1000 properly I wanted to incorporate the T/H function and braking inputs for increased transmission performance on grades and towing. This was my last accomplishment with my standalone harness setup now the customer can install a 1998 up ram column shifter with O/D off button to control the Allison T/H logic. Here is a final test log of the systems prior to shipping. This way the customer can install the harness & from there any other changes will be made on truck. My standalone kit is based on either a 01-04 LB7 OR 4.5-05 LLY platform I can also do 06-up but I have the ability to make the transmission 6 gears using the older TCM so why bother with the A40 UP TCM. I will give you guys a update on the build once we get the harness ran. The transmission is already on the truck customer used a ATS adapter plate but you can also use the SAE #3 bellhousing instead to mate a 5.9L which will work with both 1000 & 2000 series Allison transmissions. One PID I would like EFI LIVE to add is the Allison MD TPS signal, voltage, and % for logging using Allison's stock TPS sensor I could not find a PID in the scanner for this.
Note: I still have to calibrate the ECM side to suite the 5.9L 12V so sensor data is off due to not having the sensors scaled yet. The inputs I will be retaining on the ECM side is Engine coolant temp, IAT, fuel temp, Fuel pressure, MAP, barometric pressure, boost pressure, oil pressure as well as all the Allison data. Again this data can be viewed via a scan tool or live data tuning device such as a EDGE CTS or Bully Dog GT.




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