Sound like the porportioning valve is locked up. look where the brake lines go from the master cylinder to a box that has multiple lines there is a button you can push in to release this (this is not a real botton) more of a plastic dome that there is a pin under Check your Master cylinder and your brake portiting (spelled wrong) valve. My bet is that the valve is either plugged up or shot. Bad master cylinder. This happen to me it was the brake line hoses going to the front brake cylinders. trust me!! Kinda hard to think both flex lines stopping up at same time. Not impossiablle but not probable. Might very well be the case though. A delima that I am trying to still solve They will fail!Those lines deteriate inside and look fine outside. The deteriation acts like a check valve! Pressure will push the fluid through but it can only back very slowly if at all.You can prove this by opening up the bleeder valve! I had a 1985 Silverado that got so hot the brake caught on fire. I was fortunate to have stopped at a filling station and it didn't take long to get the fire out with no damage to the truck. I just couldn't believe it , either but it is true. Since then I have seen other failures just like that.
Yes. If your question is regarding the operation of the calipers. They do operate in the same manner as the front calipers.
NO. The size of the tires and wheels have NOTHING to do with the brakes.
It's rare....because usually the master cylinder will allow pressure to bleed off. Not the other way around. But if you have replaced the calipers, this is the next thing I would check. I suppose it could be sticking.
I had one do this and I had to change the brake calipers. Problem was gone.
If by scrub you mean drag or cease, then it is possible that the calipers need to be replaced.
Air in system? Remove and bench bleed master cylinder Bleed lines and calipers
This happened to our 2003 Vue. I had just had the brakes replaced and they had not done this properly, something to do with the 'calipers', so the car sounded like a bucket of bolts everytime I put on the brakes. Have them look at the rear brakes especially if you've just had them replaced.
The rear brakes on a 2001 Monte Carlo are replaced by removing the rear wheels, unbolting the calipers, and taking out the old brake pads. The new pads can then be installed and the brakes reassembled.
Depending on what's getting replaced: Pads, rotors, calipers, etc.
how do you adjust rear brakes on a 1986 chevy silverado?
Brass washers replaced when caliper replaced?Fitting tightened completely?
one possibility is internally collapsed hose.
Check the calipers on the car to see which one is frozen. Most likely you have a stuck wheel caliper that is causing the frozen problem and will have to be replaced.
usually either the calipers have dirt in them and need to be replaced or the rubber lines leading to them have collapsed inside and need to be replaced.. really kills the gas mileage uh!! chevy has had problems with rear discs on these vehicles,70%of braking is on the front,30% on the rear. therefore the pistons get little use and stick. there are stainless sliders the calipers move on,you need to clean and lubricate them,this should stop the brakes from dragging. I have a 1999 Blazer and my rear brakes were grinding so I replaced the pads and rotors but had the same sticking problem. They dont offer a rebuild kit for my calipers so I had to replace the calipers also.
change that calipers
First id have to get my back brakes on your Chevy 2500 silverado.
To thoroughly replace and repair brakes, one must replace the brake light wiring, brake pads, and brake calipers. Furthermore, one should reline the brakes.
The 1997 Chevrolet Silverado rear brakes should automatically adjust themselves. Every time you back the vehicle up and hit the brakes the brakes adjust.
Pumping brakes can help restore pressure to the brake calipers temporarily. But this method wont work if the vehicle is equipped with ABS, or anti-lock brakes. Usually, down shifting will help slow the vehicle down, but not stop completely.
Unless the calipers are frozen- you will have a slight drag as the brake pads maintain contact with the caliper
The calipers or wheel cylinders are bad.
It is possible the rubber lines at the calipers are collapsing causing a suction which will not allow the brakes to release. might want to check that. Had same issue replaced lines and calipers wheel bearing and found it to be an abs issue the pressure is not releasing
If the brakes are disc brakes then try opening the bleed screws on the calipers and see if the pressure releases if not then remove the calipers and replace because the piston is probably frozen or you can try pushing in the piston with a c-clamp,if that doesnt work replace the calipers as noted. If the brakes are drum brakes then check your brake cylinders to see if they are leaking if so you can usually rebuild them if not then replace them and bleed your brake system to get brakes back to normal, you can also make sure your drum brakes are adjusted correctly.