GMT800 Rear Inner Brake Pad or Rotor Issue

[DieselSlug]

Not entirely sure whats wrong yet, but it doesn't look right. Look at how the new pad sits in in the mount on each side of the rotor. Notice a big difference?





If you can't tell via pad and mount, look at where the rotor rides in the opening of the bracket! Its not centered even woth the bracket tightened down.

I've been having pad issues and a clunking coming from the rear passenger. What i found was the pad was so thin, it could nearly slip out of the mount and fall out! The calipers are NAPA remans, the rotors are Detroit Axle brand from either the Jungle store or eBay. My gut tells me these rotors are either not correct for my application, or are manufactured sub-par in an overall narrower fashion. I've got about 10k miles on the rotors this way before just realizing this. I need to get my hands on another set of rotors and measure the thickness.

 

[ak diesel driver]

Looks more like the offset is wrong

 

[DieselSlug]

So, OEM rotors are 30mm thick. Thats just over 1 and 1/8-inches. The current garbage I've been running measures 3/4 of an inch.

So what brand rotors are good off of RockAuto? Am I stuck with GM Genuine for $140each?

 

[dbrannon79]

I was just gonna say it looks like those rotors are really thin! the inner pad isn't sitting on the slides and could easily slip out from what I can see.

the other thing too with the spindle where the caliper bracket mounts. I'm sure you had to remove the bracket, check that surface where the bracket sits and make sure rust hasen't bulged out creating an offset for the caliper.

 

[Will L.]

Oh yeah- those pads are barely in the slides.

 

[BigDogYJ]

yeah im guessing wrong rotors. thats sketchy. I do like stock ac delco rotors but thats a lot for rotors. I've also used Bosch quiet cast pads and rotors in the past with good luck.

 

[DieselSlug]

Im putting in an order to RA today. Need to go see if there are any currwnt codes in the RA thread! Thanks all.