2012 Chevy Express 4.8 to 6.0 swap
Hi everyone,
I have a customer with a 2012 Chevy Express 2500, he installed a 6.0l in the van to replace the 4.8l. Everything work fine no check engine light, no DTC. But he still runs the 4.8l PCM and tune. He kept the original transmission 6L90E but with the new engine she is now shifting harder but was working just fine before. I believe the added torque of the 6.0l is the reason why. Since some Express came from the factory with the 6.0l can I just flash the PCM/TCM with a stock tune file from a 6.0l equiped Express that I found in the tune repository and expect everything to work fine? I should add, everything is bone stock.
Thank!!