What all signals are needed to control the 4L80 other than transmission sensors. At work we are currently in the process of doing a 12 valve cummins swap into a 2002 suburban. The customer was worried that his 6.0 was going to give up on him at only 200k and wanted something more reliable. We tried to inform him that the LS platform is known for longevity but he didnt want any part of that and wanted to switch to a diesel engine. So here we are finishing up a swap into a perfectly running truck and need to figure out if we need to use an aftermarket trans controller or if we can use the factory computer. We have crank signal, coolant temp, volts, and oil pressure all still going through the factory computer and dash so i figured we might be able to control the 4L80 as well. If i fail the maf like if i was running speed density would it shift normal or do i need to have cam signal and other things as well?