Chevrolet Repair: brake lights not coming on when brake depressed, chevy classic, newer cars

Question
Hi, I have a 2005 chevy classic and the brake lights will not come on when depressed however the center brake light DOES come on. I have replaced the bulbs and looked for the fuses to no avail. I have read that it could be the light asembly on the brake arm but for all those the center light did not work.

Answer
HI RILEY,THE BEST WAY TO CK THIS OUT IS GOING TO BE TO REMOVE THE LENS ASSEMBLY FROM THE REAR OF CAR AND REMOVE THE LIGHT SOCKET. GET YOURSELF A TEST LIGHT AND SEE IF THERE IS ANY POWER TO THE BRAKE LIGHT SIDE OF SOCKET WHEN THE BRAKE PEDAL IS PUSHED.. IF THERE IS POWER TO THE WIRE BEFORE THE SOCKET THEN THE SOCKET ASSEMBLY IS BAD OR THE PRINTED CIRCUIT TO THAT THE SOCKET IS BAD....IF THERE IS NO POWER TO THIS WIRE CK FOR THE HARNESS PLUG IN THE TRUNK, MAKE SURE THE CONNECTIONS AT THIS PLUG ARE CLEAN AND NOT ALL GREEN. [CORRODED] THESE NEWER CARS ARE ASLO WIRED VERY DIFFERENT THEN OLDER CARS. AGAIN WITH A TEST LIGHT CK ALL THE FUSES IN THE CAR, UNDER DASH AND FUSES UNDER THE HOOD..BOTH SIDE OF THE FUSE WILL LIGHT THE TEST LIGHT IF THE FUSE IS GOOD, IF JUST ONE SIDE OF THE FUSE LIGHTS THAT FUSE IS BAD..MAKE SURE THE KEY IS ON..
YOU DO NOT HAVE TO PUSH DOWN ON THE BRAKE PEDAL DURING THIS TEST. I HOPE THIS HELPS YOU. TOM...