2004 Suburban LS 4x4 without any issues with the brake system, started to have both rear brakes sticking and/or dragging. Noticed I had something wrong because vehicle was slowing down faster then normal. This all started about a mile from the house and the brakes where noticable hot.

I replaced pads, caliper bracket and new slide pins. This did not help. Everytime I apply the brakes they drag.

Both rear calipers came off easily and depressed easily with a c clamp.

No leaks in the system at all. Haven't had to add any brake fluid.

 

Could it be the parking brake shoes?

 

I should have added that...the e brakes was not the issue...both rotors came off easily and once the brake issue is resolved...I will have to make a slight adjustment to make the e brake grab more...thank you for the reply

 

Inspect for damaged hard line fluid feed and the hoses can be old enough, especially if you have not been flushing brake fluid every couple of years, where they are coming apart on the inside and if in a rust belt state the hoses likely look bad on the outside too.

Does the brake pedal travel feel normal?

 

I have done a visual inspection of the hard lines...and was able to release the calipers without much effort with a c clamp...which provides me with some security the lines are clear...i have a vacuum bleeder on the way to flush out some old fluid...

brake pedal is normal...no leaks. Haven't had to add brake fluid and vehicle has spent most of its life in Texas...
Thanks for the comment...

 

You said you replaced pads, caliper brackets and hardware. Why not the calipers at the same time? Also, did you clean and lube all contact areas and slide areas with high temp grease. Rotors? Machine or replace?

 

Both brakes dragging, brake hose from center of rear end to frame may be partially collapsed internally causing pressure not to release fully.