That's strange, are you using a Mac - I'm using windows 10, and downloaded the free adobe arcobat reader utility (or at least I don't remember ever paying for it), although I think firefox will also read pdfs. Maybe you can borrow the Oreilly scanner again just to make sure what codes are still there (maybe they've changed). Have you been able to check the CAB CAN BUS connections, or the voltages to the SLA or TMU? Checking your transmission fluid level isn't easy (I've never done it) but there are a lot of posts describing it. Sadly without a expensive scanner, the method is first eliminate the simple things (connections, shorts and voltages) then its onto replacing things one at a time. I have an innova scanner that doesn't really do a lot for the crossfire, but I did buy the micropod II DRB III emulator and that works pretty well, but It was a hassle to get working - soldering the missing ground connection was a challenge, but I somehow managed it. I think working on the crossfire requires a lot of patience - I look at like a challenge, and once I figure out what's gone wrong, it's very satisfying to fix it.