Battery died and had to jumpstart my Tahoe. Now the low beam headlamps won't come on. High beams and fog/driving lights work. Vehicle has been jumpstarted in the past, but never had this issue before.

Battery died, jump started the car and drove to parts store. Purchased and installed new battery. After installation, low beams stopped working, parking light come on instead. When I switch in and out of auto mode, the parking lights go on and off. When I turn the switch to turn on headlights, the parking lights come on. High beams work fine. I tried changing the low beam relay, but no help. Also, the day before I replaced the battery, the low beams were working fine, both sides.

So I changed out my pcm with another, tried resetting it. Failed! Swapped ignition switch that matches the pcm swap. Still nothing. Now my battery dies within minutes of attempting to try anything. Any help will be great. I must add if I put my original parts back on it cranks!