Brake noise

[mackguy]

Planning to go on the lift this Saturday to find out what's going on for sure but wanted to get some ideas first.

99 K1500 Suburban

First noticed a low grinding sound when coming to a stop. Have now noticed a constant metallic scraping sound at any speed with/without brake application.

Bought the Suburban in March and don't know much history from before then so my first thought is it just needs pads/shoes. There is no "squealing" as associated with worn pads though so I'm not sure.

Braking performance doesn't seem diminished, but I've only really driven it once since I noticed the noise, and was giving myself plenty of room.

Just wondering if anyone has solved this issue, or if it's just standard worn brakes.

 

[df2x4]

Probably just worn pads IMO. Although I did fight this issue for a while on my Suburban. I replaced pads and rotors (and drums) all the way around and still had noise. My issue ended up being cheap pads and/or rotors. After sitting for a couple days the rotors would develop a little bit of surface corrosion and squeak like hell. Replaced them again with some slightly nicer equipment and the issue disappeared.

 

[mackguy]

Dumb question, but I'm looking up pads/shoes and I see different p/n for FRONT pads depending on REAR drum diameter. Does that make sense?

Furthermore, how do I know which rear diameter I have?

Bendix gives me a choice of 10" or 11" rear drum, O'Reilly shows 11" or 13".

 

[Cokeman95]

I don't why it gives you that option but rockauto only lists 11" or 13" drums with the 13" being for 8 lug axles. My 99 k1500 suburban has 11" rear drums.

I agree with df2x4, don't skimp, get quality brake components.

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[mackguy]

Rock Auto gives option of different front pads depending on rear drum of 10 or 11.. Oh well, just wonder what the 10" version fits.




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[95C1500]

My 10 bolt had 10" brakes. My 14 bolt (6 lug swap; came off a 94 k1500) has 11" brakes. 13" brakes, I assume, are from 8 lug trucks. I have no idea if that's the case, just seems possible