I was pulling a trailer, had to brake hard for a stop light and hit a bump in the road all at the same time.

Now my rear brakes are stuck. They will not release, of course the truck will go but they will burn up shortly.

Any suggestions? It is both rear brakes and it is not the e brake.

 

Sounds like this could be your rear hoses. Internal lining break down not letting the brake fluid flow back to the reservoir.

 

sounds like the proportioning valve for your ABS is stuck.

on the back of each rear caliper, there is a tiny bleed screw. I think 7/16" is the size. It's kinda obvious.

try venting each caliper to release the pressure. hopefully the proportioning valve will shift back to neutral and you'll be good to go. most likely when you hit the brakes and the large bump that valve got jammed

 

X2 above. Also consider flushing your fluid. Hoses should be changed every so often too due to age & or mileage. $20 hose=cheap safety. Most don’t realize brake fluids like a sponge and readily absorbs moisture and contaminates. I flush my Brake systems as often as possible every 2 years or 20K. I have a 95 GC Jeep with 215K. The calipers are original and I live in the salt belt! I also have muscle cars that sit so they get the same treatment.
Jegs or Summit sells a relatively inexpensive pump style bleeder that forces fluid through the master cyc. $80 well spent. Be careful not to mix synthetic & regular.

 

This morning the brakes are working. I am going to change the fluid because I am sure I cooked the fluid in the rear.

Thank you for the ideas, I will try some of them or all of them if it happens again, I hope this was an anomoly.

 

Pressure likely bled off from behind the proportioning valve and it reset/shifted back

Hope it doesn't do it again

 

A collapsed hose will bleed off over a period of time as well. If you hit the brakes again and they dont release it's the hose(s) acting as a one way check valve. If they work fine now its most likely what Tylus said, the prop valve. If you have rear discs, pull the calipers apart and lube up the slider pins with antiseize while your doing the hoses. How many miles on your rig? If over 100K or 8-10 years old do the hoses on all four corners (3 if drum brakes on rear). Your going through the trouble of bleeding might as well do the hoses too. Cheap insurance. Power bleeder is the best way. It will get 99% of the old crud out, your leg wont be sore from pumping the brake pedal and you dont have to keep filling the master. The 60-80 spent on the Jegs or Summit unit will pay for itself the first use.
One more thing have extra bleeders on hand you know your gonna strip at least one. If the bleaders dont have the little caps over them daub some grease over them when your finished, keeps them in good shape for the next bleed.