Cos3 01270003 to Cos 5 02020005. Wont start now
Hey guys. Full story is I have a 95 silverado with a DBC 6.0/4L80E. Motor came with an 0411 pcm that had the 12208322 OS. I switched that to the 01270003 cos 3 since Im also running a turbo. It runs fine like this but now I want to upgrade to the cos5. So I went to tune file depot and got a stock file from a 2002 chevy silverado with the 6.0/4L80E which has the 12212156 OS. So I did the full flash to the 02020005 OS, cal flash the 12212156, read, and saved. Then I copied and pasted my co3 tables to my cos 5 tables and cal flashed that to the computer. Went to start it and it cranked but didnt fire. It would pop every now and then. So I full flashed the cos 3 back into it and it started slowly and runs now. I think it was flooding. So what did I do wrong here? Or is it I cant use the 2002 silverado tune file?
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