2004 Chevrolet Malibu Fast blinking turn single lights.

I own a 2004 Chevy Malibu LS, which I recently changed the front plastic headlamps in. Now I have a fast blinking turn single problem. The interior turn single indicator lights and rear tail lights blink fast, and the front turn single lights don't blink at all. The problem is intermittent, and sometimes the single lights work fine all the way around.

I changed out the bulbs in the front single lights to the old ones to see if this would correct the problem, because prior to the plastic headlamp change the problem didn't exist, but still the problem continues.