Rubbing Noise From Rear Brakes...

[poorboy]

When going around corners Sounds like it's primarily coming from the passenger side. Also seem to notice a tin-type sound when going over expansion joints on the road...also from the rear brakes.

 

2002 Z71, 80,000 original brakes and rotors. Truck did have the e-brake fix under TSB/recall for the new clip.

[sagent]

Most likely rust build-up on the e-brake drum portion of the rotor ( inside ). I had the revised clips installed on my rears also and they lasted abt 30,000 miles. They are not much better than the originals. Napa sells a much better clip made from one piece of metal that has lasted me now for over 40,000 miles. The revised Gm style is 2 pieces that are pressed together.

[poorboy]

Thanks. Was just curious...how hard is it to pull the drum and inspect the ebrake pads? Should I grind off the rust build up. While I've got the thing apart should I throw some good quality pads on there or just wait til I really need them? What about turning the rotors...is that a must when replacing pads.

[Mike-B]

Do you have any experiencing playing around a drum? It is quite a bit different as opposed to the rotor/pad combination up front. If not, personally, I would just have a reputeable shop repair it.

 

Rotors are recommended to be turne if you replace the pads. Also be sure that the rotor has not exceeded the minimum thickness, otherwise, they would have to be replaced.

[Bish]

It could also be the backing plates or splash guards as some call them. The plate behind the rotor is made from really cheap metal and it rusts. When mine rusted, it expanded and started to expand to the point that it contacted the rotor when turning producing a scraping sound. Check the plates and maybe pull them away from the rotor and see if it goes away.

[sagent]

My rear rotors were a S.O.B. to pull off due to rust in the drum portion. I eventually had to pull them off with a big 3 jaw puller and took a few chunks off the e-brake shoes, however they seem to work fine. I heard somewhere that GM's remedy for this problem was to take a dremel tool or similar and grind the rust off the inside of the drum. What I did was buy a 2 inch barrel type sander attachment for my drill and run it over the inside of the drum a few times. I eventually had to replace rotors as they were under specs for resurfacing.

 

You may want to slightly depress e-brake while truck is slowly going forward and basically let the shoes do the work on the drums.