on1wheel01

Hey guys just helped a friend pick up a 2004 trailblazer extended version. Got it form the wrecked auctions. Very very light hit in the front. Battery was dead as they sit for a few months so charged it up and it's back to being strong. Go to crank it and nothing. Don't even hear the fuel pump kicking on. So did the relay test. Have power or ground on all 4 prongs at the fuse box all fuses under the hood are good. Tried swapping relays didn't help. Also swapped the ignition from another identical tb and still nothing. When I use a jumper wire under the hood in the fuse panel with relay removed I hear the fuel pump activate and I can start and let it idle. I'm stumped and hoping you guys can help. Thank you so much