2005 gmc envoy_sle
A couple months ago I had someone in traffic tell me I had no brake lights, so I get home and check and both left and right brake lights are not working but the upper middle one is working fine. I get the correct new bulbs from autozone and swap out the old with the new ones, I start the truck to test it out and to my surprise the ABS and Parking Brake lights are on. It's been like this a couple months now and and I have tried to see if the ABS is really not working and they definitely are not, tried slamming the brakes on a wet road and full lock up. I read a few post about a bad ground under the drivers seat on the frame, I took mine off cleaned it up and put it back on with no luck. I've unplugged battery a few times and the light just remain on. I really can't figure out what happened, all I did was change the bulbs. I have yet to get the code read as my scanner doesn't read ABS codes, so I guess that's my next step. But, can anyone point me in a direction here? I'm kind of at a loss at this point. Truck is a 2005 Envoy SLE.