2006 Chevrolet SSR Chevy ABS Light

Hi my 2006 Chevy SSR keeps dinging with the ABS Light. It cones up intermittently. Here recently it keeps coming up more and more. I just replaced the underhood fuse block because the buss bar went bad in it. That is what the dealer said the cause was. It would cut off on its own while driving. It lost horsepower the loss of power and engine light came up. Could this new underhood fuse block be the cause of the ABS light. If not what could it be. What should I start to test to see what is going on. The truck only has 100,000 miles on it the next question is the brake fluid had never been bleed could that cause the abs light to come on. I am going to bleed it regardless but I was curious if that could cause the light to come on. The fluid is dirty anyways. Thanks.