sts4rmdapast Posted April 18, 2008 Report Share Posted April 18, 2008 I bought a pontiac some time ago, i noticed that the right rear brake tends to grab and sink when i press the brakes. i know this is a cadillac forum but i know i can get more help from you guys than the pontiac forum(they suck). what should i check? what could be causing this problem Link to comment Share on other sites More sharing options...
adallak Posted April 18, 2008 Report Share Posted April 18, 2008 I bought a pontiac some time ago, i noticed that the right rear brake tends to grab and sink when i press the brakes. i know this is a cadillac forum but i know i can get more help from you guys than the pontiac forum(they suck). what should i check? what could be causing this problem "right rear brake tends to grab and sink when i press the brakes...." I can understand the "grab" part but cannot the "sink" one. Could you please clarify that? The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
sts4rmdapast Posted April 18, 2008 Author Report Share Posted April 18, 2008 I bought a pontiac some time ago, i noticed that the right rear brake tends to grab and sink when i press the brakes. i know this is a cadillac forum but i know i can get more help from you guys than the pontiac forum(they suck). what should i check? what could be causing this problem "right rear brake tends to grab and sink when i press the brakes...." I can understand the "grab" part but cannot the "sink" one. Could you please clarify that? to explain it better. i dont feel it sink actually but i when i release the brake it feels as if the rear of the car rises. thats its released from a hold Link to comment Share on other sites More sharing options...
Cadillac Jim Posted April 18, 2008 Report Share Posted April 18, 2008 If these are drum brakes, the brake shoes might be contaminated. It could also be sticking brake shoes or slave cylinder pistons. If the rears are disk brakes, it could be sticking caliper pistons, or heavy grease or brake fluid contamination. If they are drum brakes, a quick brake job -- new brake shoes, a light smoothing and leveling cut on the brake drums, and rebuilt slave cylinders -- should fix it right up. If they are disk brakes, fix the contamination first, or if the calipers are just stuck, then replace the pads and rebuild the calipers. With either type of brakes, do both sides so that your braking is symmetrical when you are done. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 18, 2008 Report Share Posted April 18, 2008 Have you pulled your drums to have a look? Could be metal to metal, could be mal-adjusted, the linings contaminated with something like Jim noted or moisture in the fluid. The sinking feeling is due to the suspension tension being released when you let off the brake, something is grabbing and winding up the suspension. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
sts4rmdapast Posted April 22, 2008 Author Report Share Posted April 22, 2008 i go back on what i said earlier, i do feel it sink. i decided to take a look back there and they're brake drums. i got in my car and as i pulled out of the parking space i decided to brake and when i did the rear sunk down and the brakes started grabbing again. and then as i pulled of it sounded like it was stuck in that position and i heard a sort of rustling metal sound. so should i bleed the brakes? and what can i do about the suspension? Link to comment Share on other sites More sharing options...
sts4rmdapast Posted April 22, 2008 Author Report Share Posted April 22, 2008 oh yea it's not metal on metal either Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 22, 2008 Report Share Posted April 22, 2008 Did you pull the drum and have a look? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
sts4rmdapast Posted April 22, 2008 Author Report Share Posted April 22, 2008 yea i pulled off the drum and everything seemed fine, but maybe because i have an un trained eye. what should i look for , because the shoes are good? Link to comment Share on other sites More sharing options...
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