Hi there

I have a 2008 Ford f-250 super duty 4x4 with 5.4 auto.

I just replace my rear rotors (drilled & slotted rotors) ,( ceramic) pads, brake brackets and guide pins, But I am getting a scraping or grinding kind of noise on the rear left side when i apply the brakes or turning left. If i have my camper on the back of the truck, the noise in the rear left gets worst, if i hear the noise and pump the brakes, the noise goes away, but its there still when turning left. Before I change the rotors and pads and brake brackets and guide pins, I had no noise in the rear left. Please help I hope this make sense.

 

My first guess is that your slide pins are getting stuck. Did you uber-grease them on install?

 

The new guide(slide) pins were silicone grease on install