GMC Yukon Turn Signal Blink Fast

When I Use The Turn Signals On, They Blink Rapidly And When I Press The Break Pedal They Go Solid. When You Press The Break Pedal The Turn...

When I Signal Left It Flashes Rapidly On The Front And The Rear Light On The Driver Side, And On The Running Lights Its Brighter That Normal...

I Replaced The Center Bulb, So Now All Look Good On The Left Rear, The Connecting Board Looks Good (didn't Appear To Be Anything But...