[rlfd213]

I just did mine 04 LS 4x4 and it was by far the worst job I have ever had to do. No room for anything and just plain tiring. The crossmember needs to come out and if you drop the down pipe you have a lot more room to work. Get all new fittings (trans and radiator side) because they will probably be siezed. I just cut sections out a bit ata a time to get them out. Also make your first cut the return line by the radiator and you can flush out most of the fluid before. I also serviced the trans and there was less than a quart in the pan when i dropped it. Total it took 9 quarts when i refilled it. One last note, get a can of PB blaster and soak everything down, muffler nuts, down pipe nuts, cross member bolts. that's my .02