Left rear rotor just changed now its rubbng the brake caliper mount

sounds like they a warped because they got hot are these the rear rotors ? i would check for collapsed rubber lines, sticking calipers, sticking pads in the mounting brackets frozen e-brake cable the same can be checked on the front minus the e-brke cable

Front and back rotors are different. For front rotors, after you remove the wheel you need to remove the bolts holding the caliper to the mounting spindle. The bolt can be a standard 6 face head, a recessed hex, or even a torx or star head recessed bolt.

With bolts removed, the caliper can be worked away from the anti-rattle clips the caliper slides on. These clips are called "hardware" and should be replaced.

The caliper pistons need to be pressed back into position because the new pads are thicker than what you removed. The calipers should be tied and suspended and not allowed to hang by their brake lines while you work with the rotors. Use a "c" clamp and an old brake pad to press the pistons back in. Sometimes it is good to remove the cap on the Master cylinder to allow for brake fluid to travel back to the Master.

Either replace or turn the old rotors and then put the brake hardware in place. Lube the caliper slides. then as a unit position the pads into the caliper and hang the caliper over the rotor. The caliper will hang and pivot into place. Replace and tighten the mounting bolts.

The rear brakes are more of a problem due to a second set of Emergency brakes in rear assemblies. So you have 2 sets of rear brakes, the Emergencies requiring clearance to remove the rear rotors. Some car models require readjustment of the Emergency cables before reassembly.

In all, I would suggest that you be an observer for your first brake job. At least get a Video of the process at a number of autoparts stores. You can wind up with a car you can not drive or reassemble without help.

1. Release the park brake.
2. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
3. Remove the tire and wheel assembly.
4. Mark the relationship of the rotor to the hub.
5. Remove the brake caliper bracket mounting bolts.

Notice: Support the brake caliper with heavy mechanic's wire, or equivalent, whenever it is separated from it's mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

1. Remove the brake caliper and brake caliper bracket as an assembly and support with heavy mechanic's wire or equivalent. DO NOT disconnect the hydraulic brake flexible hose from the caliper.
2. Remove the rotor retaining push nuts from the wheel studs, if applicable.
3. It may be necessary to strike the end of the hub or the rotor with a deadblow hammer to separate the rotor from the hub.
4. Remove the rotor by slowly fuming the rotor while pulling the rotor away from the axle.

Installation Procedure

Notice: Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the rotor and flange with the J42450 hub cleaning kit. Failure to do this may result in increased lateral runout of the rotor and brake pulsation.

1. Use the J42450-A to clean all rust and contaminants from the mating surface of the hub flange.
2. Use the J41013 to clean all rust and contaminants from the inside diameter of the hub section of the brake rotor to prevent any foreign material from getting between the brake rotor and the hub flange.
3. Install the rotor by slowly fuming the rotor while pushing the rotor towards the axle.
4. Install the caliper and the bracket as an assembly to the vehicle.
5. Perform the following procedure before installing the caliper bracket mounting bolts.

• Remove all traces of the original adhesive patch.
• Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
• Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.

Notice: Refer to Fastener Notice in Service Precautions.

1. Install the caliper bracket mounting bolts.

• For the 15 Series, tighten the brake caliper bracket mounting bolts to 175 Nm (129 ft. lbs.).
• For the 25 series, tighten the brake caliper bracket mounting bolts to 300 Nm (221 ft. lbs.).

1. Install the tire and wheel assembly.
2. Lower the vehicle.
3. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
4. Slowly release the brake pedal.
5. Wait 15 seconds, then repeat steps 9-10 until a firm pedal is obtained. This will properly seat the brake caliper pistons and brake pads.
6. Fill the master cylinder reservoir to the proper level with clean brake fluid.

Brake Pads Removal & Installation Front

To Remove:

1. Drain brake fluid to ½ full level in reservoir.
2. Remove the front wheels.
   
   
3. Remove the front brake caliper assembly.
4. Remove the 2 anti-squeal shims from each of the 2 brake pads.
5. Remove the wear indicator from each of the 2 brake pads.

To Install:
NOTE: When replacing worn pads, the anti-squeal shims must be replaced together with the pads.

1. Using a large C clamp or equivalent press piston into the caliper.
2. Apply disc brake grease to the inside of each anti-squeal shim.
3. Install the anti-squeal shims on each pad.
4. Install the pad wear indicator clip to the pads.
5. Install the pads with the pad wear indicator plate facing upward.
6. Install the brake caliper with the 2 mounting bolts. Torque the bolts 25 ft-lb (34 Nm).
7. Install the front wheels.
8. Fill the master cylinder with new clean brake fluid.
9. Pump the brake pedal several times to seat the brake pads.

Rear TMC made rear brake components

TMMK made rear brake components

To Remove:

1. Drain the brake fluid to ½ full level in reservoir.
2. Remove the rear wheels.
3. Remove the caliper slide pins.
4. Remove the caliper slide pin bushings (TMMK made) (Kentucky).
5. Remove the rear brake calipers.
6. Remove the 2 brake pads with the anti-squeal shims.
7. Remove the anti-squeal shims and pad wear indicators from brake pads.

To Install:

1. Using a large C clamp or equivalent press the piston into the caliper.
2. Coat both sides of the outer anti-squeal shim with pad grease.
3. Install anti-squeal shims to each pad.
4. Install wear indicators on the 2 brake pads.
5. Install the caliper slide pin bushings (TMMK made) (Kentucky).
6. Install the rear brake caliper with the slide pins. Torque the slide pins as follows:
   • TMC made (Japan): Torque the caliper slide pin 25 ft-lb (34.3 Nm)
   • TMMK made (Kentucky): Torque the caliper slide pin 34 ft-lb (47 Nm)
7. Fill the master cylinder with new clean brake fluid.
8. Pump the brake pedal several times to seat the brake pads.
9. Install the rear wheels.

Brake Rotor Removal & Installation Front To Remove:

1. Remove the front wheels.
2. Remove the front brake caliper assembly.
3. Remove the front brake pads.
4. Remove the 2 bolts and caliper mounting bracket.
5. Place match marks on the disc and axle hub.
6. Remove the front wheel disc.

To Install:

1. Align the match marks and install the front disc.
2. Install the brake caliper mounting bracket. Torque the bolts 79 ft-lb (107 Nm).
3. Install the brake caliper. Torque the bolts 25 ft-lb (34 Nm).
4. Install new gaskets and connect the brake hose to the caliper with the banjo fitting bolt. Torque the fitting bolt 22 ft-lb (29.4 Nm).
5. Fill the reservoir with brake fluid.
6. Bleed the brake system.
7. Install the front wheel.

Rear To Remove:

1. Remove the rear wheels.
2. Remove the brake caliper assembly.
3. Remove the brake pads.
4. Remove the 2 bolts and the caliper mounting bracket.
5. Place match marks on the disc and axle hub.
6. Remove the rear disc.

To Install:

1. Align the match marks and install the rear disc.
2. Install the rear brake caliper mounting bracket. Torque the bracket bolts as follows:
   • TMC made (Japan): Torque the bracket bolt 46 ft-lb (61.8 Nm)
   • TMMK made (Kentucky): Torque the bracket bolt 34 ft-lb (47 Nm)
3. Install the rear brake caliper with the slide pins. Torque the slide pins as follows:
   • TMC made (Japan): Torque the caliper slide pin 25 ft-lb (34.3 Nm)
   • TMMK made (Kentucky): Torque the caliper slide pin 32 ft-lb (43 Nm)
4. Install new gaskets and connect the brake hose to the caliper with the banjo fitting bolt. Torque the fitting bolt 22 ft-lb (29.4 Nm).
5. Fill the reservoir with brake fluid.
6. Bleed the brake system.
7. Install the rear wheel

Front brake
Step 1: Identify Front Disc Brake Components

Front Wheel Drive Brake Assembly
Most front disc brake components include: brake rotor, brake pads, brake caliper, caliper mount and brake flex hose. Brake service usual occurs between 20,000 and 40,000 miles depending on driver habits, road conditions and brake pad/ rotor materials used.
Step 2: Remove Brake Caliper to Replace Pads

Removing Brake Caliper Mounting Bolts
Locate primary caliper mounting bolts; apply wrench pressure counter-clockwise (When looking at the head of the bolt) to remove the bolts, upper and lower. Make sure the bolt threads are in good shape and replace if necessary.
Step 3: Remove Front Brake Caliper

Remove Front Brake Caliper
After removing the primary caliper mounting bolts lift the brake caliper off of the rotor and then tie or secure to the side, being careful not to bend or kink the brake caliper flex hose. Thoroughly inspect brake caliper and brake hoses for leakage, cracks or chaffing and replace as needed. Next remove the brake pads (If not mounted in the caliper) and secondary caliper mounting bolts. Notice how great protective gloves work, most technicians use them on the job today.
Step 4: Remove Brake Pads

Remove Front Brake Pads
Once the brake pads have been removed, make sure if there is anti rattle hardware to transfer to the new brake pads. Some brake pad manufacturers will include the proper lube (Caliper slides) and anti-rattle hardware to ensure proper performance of their product.
Step 5: Remove Caliper Mount

Remove Caliper Mount Bracket
Finish removing secondary caliper mount bolts and remove caliper mount. Note: clean and lube caliper slides and pad friction surfaces of all foreign material or build-up.
Step 6: Remove Brake Rotor

Remove Brake Rotor
With the caliper mount out of the way you can now remove the brake rotor. Sometimes it can get stuck so you may need to tap it with a hammer or use penetrating oil to free it up. Some manufacturers use small screws to hold the rotor on as well. Clean and inspect wheel studs, replace if any are damaged. Also clean bearing hub rotor mount surface to ensure the proper mounting of the new brake rotor. Inspect the ABS sensor wheel for cracks or damage and replace as needed.
Step 7: Depressing the Brake Caliper

Resetting Brake Caliper
To install the new brake pads you must retract the brake caliper piston. Remove the master cylinder lid or open the brake caliper bleeder screw to allow excess brake fluid to be released if necessary. Install C clamp tool and gently tighten clamp until caliper piston is fully depressed. Note: use old brake pad to protect the caliper piston. Close the bleeders once the piston is retracted completely
Step 8: Installing New Brake Rotor

Install Brake Rotor
Install new brake rotor, the new rotor is manufactured with a protective film over the rotor to keep it from rusting, remove protective film with brake cleaner before installing; also after the brake job is complete you may experience a small amount of smoke from the rotor when first used. This is normal and will go away after the first couple of uses.
Step 9: Installing New Front Brake Pads

Installing New Brake Pads
Reinstall the front brake caliper mount, and then install front brake pads. Make sure the pads are seated properly in the caliper mount; it must be a close fit to work properly..
Step 10: Reinstall Front Brake Caliper

Re-Install front Bake Caliper
Reinstall front brake caliper and reinstall caliper-mounting bolts, recheck all mounts and mounting bolts. Check the caliper slides to be sure there is no bind and that the caliper moves freely back and forth on the caliper slides. Bleed brake system per manufacturer's specifications to relieve any air trapped in the system. Before driving the vehicle, push the brake pedal down and let it up slowly, repeat until normal brake pedal operation resumes, this operation is forcing the brake pads to travel to the brake rotors.

Removal & Installation Front To Remove:

1. Inspect the fluid level in the master cylinder reservoir. Remove fluid from the reservoir until the level is lower then half way between the MAX and MIN levels.
2. Remove the tire and wheel assembly.
3. Install 2 wheel nuts to secure the rotor on the hub.
4. Remove the bottom brake caliper pin bolt.
5. Pivot the brake caliper body upward and secure out of the way. Do NOT disconnect the hydraulic brake flexible hose from the caliper.
6. Compress the piston back into the bore using a C-clamp. Figure of brake assembly with caliper raised showing brake pads in mounting bracket
   
   
7. Remove the inboard and outboard brake pads from the brake caliper bracket.

To Install:

1. Install the brake pad retainers and both brake pads into the caliper bracket.
2. Pivot the brake caliper down over the brake pads and into the brake caliper bracket. Insert the lower brake caliper pin bolt and torque bolt to 70 ft-lb. (95 Nm).
3. Reinstall the tire and wheel assembly.
4. Lower the vehicle.
5. Refill the master cylinder. Pump the brake pedal several times to seat the pads against the rotor.
6. Check the master cylinder level and add fluid as necessary.

Rear To Remove:
Rear disc pads R&I

1. Inspect the fluid level in the master cylinder reservoir. Remove fluid from the reservoir until the level is lower then half way between the MAX and MIN levels.
2. Remove the tire and wheel assembly.
3. Install 2 wheel nuts to secure the rotor on the hub.
4. Remove the upper caliper mounting bolt.
5. Pivot the caliper down to access the pads.
6. Remove the inboard and outboard pads from the caliper bracket.
7. Remove the brake pad clips from the caliper bracket.
8. Compress the piston back into the bore using a C-clamp and the old inner pad.

To Install:

1. Install new brake clips in the caliper bracket.
2. Install the inboard and outboard pads in the caliper bracket.
3. Pivot the caliper up over the pads.
4. Reinstall the upper mounting bolt and tighten to 32 ft. lbs. (44 Nm).
5. Remove the 2 wheel nuts securing the rotor.
6. Reinstall the tire and wheel assembly.
7. Refill the master cylinder. Pump the brake pedal several times to seat the pads against the rotor.
8. Check the master cylinder level and add fluid as necessary.

Disc Brake Pads for Suburban 1500 Removal & Installation Front To Remove:
Front caliper mounting bracket

1. Remove the cover on the master cylinder and siphon out 2/3 of the fluid. This step prevents spilling fluid when the piston is pushed back into the caliper bore.
2. Raise and support the vehicle safely.
3. Remove the wheel and tire assembly.
4. Compress the brake piston back into its bore using a C-clamp.
5. Remove the 2 caliper mounting bolts. Lift the caliper off the rotor.
6. Remove the inboard and outboard pad.
7. Remove and discard the anti-rattle clips.

To Install:
Caliper bracket sleeves

1. Thoroughly inspect, clean and lubricate all caliper slide points, bolts and hardware.
2. Install new anti-rattle clips.
3. Position the inboard and outboard pads into the support bracket
4. With the 2 pads in position, place the caliper over the brake rotor and align the holes in the caliper with those of the mounting bracket.
5. Install the caliper mounting bolts through the sleeves in the inboard caliper ears and into the mounting bracket.
6. Tighten the mounting bolts to: 80 lb. ft, (110 Nm).
7. Install the tire and wheel assembly. Lower the vehicle.
8. Add fluid to the master cylinder reservoirs so they are 1/4 in. (6.35mm) from the top.
9. Test the brake pedal by pumping it to obtain a hard pedal. Check the fluid level and add fluid as necessary.

Rear To Remove:

1. Remove 2/3 of the brake fluid from the master cylinder.
2. Raise and safely support the vehicle.
3. Remove the wheel and tire assembly.
4. Remove the brake caliper mounting bolts. Suspend the caliper from the frame with mechanic's wire. Do not allow the caliper to hang from the brake hose.
5. Remove the brake pads from the caliper mounting bracket.
6. Remove and discard the anti-rattle clips.

Rear brake caliper

To Install:

1. Install new anti-rattle clips.
2. Position the brake pads to the caliper mounting bracket.
3. With the 2 pads in position, place the caliper over the brake rotor and align the holes in the caliper with those of the mounting bracket.
4. Install NEW caliper mounting bolts. Tighten to: 30 lb. ft, (40 Nm).
5. Install the wheel and tire assembly.
6. Lower the vehicle.
7. Refill the master cylinder to the proper level with fresh brake fluid. Pump the brake pedal slowly and firmly to seat the brake pads. Burnish the brakes as needed.

Rear disc brake pads offer better performance and are not as affected by moisture like conventional brake shoe style brakes are. Rear disc brakes are similar to front disc brakes. The main difference is that rear disc brake systems must incorporate the emergency brake system. There are two methods widely used for the emergency brake with rear disc systems. The first system is a brake shoe inside the brake disc that is actuated by the emergency brake lever. The second is a screw style actuator inside the brake caliper. When activated the brake pads are forced into the brake disc and held tightly by the emergency brake lever.
READ COMPLETELY BEFORE STARTING
Step 1 - Identify Rear Disc Brake Components
Rear disc brake assembly includes; rear brake disc, rear brake pads, brake caliper mount and a caliper mounting screw. (Note: Some vehicles do not have the rotor mounting screw.)
Step 2 - Removing the Rear Brake Caliper Mount Bolts
To replace rear brake pads and rotors the rear brake caliper needs to be removed. First loosen the rear brake caliper mount bolts and remove them. Turn counter clockwise.
Step 3 - Lift Rear Brake Caliper from The Caliper Mount
After the caliper mount bolts have been removed, gently lift the brake caliper from the caliper mount. Inspect the caliper slides; they should move freely in the caliper mount. Remove rear brake pads and hardware.

Step 4 - Removing Caliper Mount Bolts
With a socket wrench or other appropriate removal tool, loosen the rear brake caliper mounting bolts. Remove bolts and lift the caliper mount and remove it from the vehicle. Remove the retaining screw from the disc mounting hole. Tap the rotor gently to release any rust that has accumulated between the rotor and bearing hub. Lift brake rotor from wheel hub holding on tightly, using both hands. You do not want to drop the rotor.

Step 5 - Removing Rear Brake Rotor
Remove the retaining screw from the disc mounting hole, tap the rotor gently to release any rust that has accumulated between the rotor and bearing hub. Lift brake rotor from wheel hub, hold on using both hands and do not drop.

Step 6 - Install New Brake Rotor
Check the new rotor against the old brake rotor to make sure they are the same size. Clean the mating surface on the wheel hub before the new brake rotor is installed. Reinstall rotor retainer screw.
Step 7 - Reset Rear Brake Caliper
Before new brake pads can be installed, the rear brake caliper must be reset. The reset tool winds the piston back into position so the new brake pads will fit. This style of brake caliper will not compress with a clamp tool; it can only be reset with the proper reset tool.
Step 8 - Reinstall Rear Caliper Mount and Install New Rear Brake Pads
After the caliper has been reset, reinstall caliper mounting bolts and make sure the bolts are tight. Then match up the old brake pads to the new brake pads. They should be exactly the same except, of course; the old ones will be worn out. Check the new brake pads for proper fit and install any brake hardware that is required.
Step 9 - Remount Rear Brake Caliper
Reinstall the brake caliper, align brake pad hardware and reinstall caliper mounting bolts. (Note: align the rear peg of the brake pad to the groove in the caliper piston.) Recheck and retighten all caliper and caliper mount bolts. Bleed brake system to relieve any air in the system. Before driving the vehicle, push the brake pedal down and let it up slowly. This operation forces the brake pads to travel to the brake rotors. DO NOT DRIVE VEHICLE until proper brake pedal operation resumes. When test driving vehicle listen for any unusual noises during the operation of the brakes.
WARNING! Always have the vehicle under inspection on level ground, in park with the emergency brake on. Always wear protective eyewear, gloves and necessary clothing before inspection or work begins. Never crank an engine over when anyone is near the battery or engine. Always have an operational fire extinguisher close by, obey all first aid instructions in the event of an injury. Never stand in front or behind a vehicle when cranked over or running. When engine is cranked over keep hands and clothing away from rotating components. Never move a car without proper brake pedal operation.

Removal & Installation CAUTION Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.

The brake rotor can be removed without separating the caliper from the mounting bracket.

1. Release the parking brake.
   
2. Remove 2/3 of the brake fluid from the master cylinder.
   
3. Raise and support the vehicle.
   
4. Remove the tire and wheel assembly.
   
5. Remove the caliper and mounting bracket as an assembly.
   
6. Hang the caliper and mounting bracket assembly from the suspension using mechanics wire.
   
7. Remove the rotor. Slowly turn the rotor while pulling the rotor away from the axle. (15 series).
   
8. Remove the rotor. Slowly turn the rotor while pulling the rotor away from the axle. (25 series).
   NOTE If the rotor is stuck to the hub, try using a slide hammer to free it.
   
   

To install:
WARNING Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral run-out (LRO) of the brake rotor, which could lead to brake pulsation.

1. Thoroughly clean any rust or corrosion from the mating surface of the hub/axle flange.
   
2. Thoroughly clean any rust or corrosion from the mating surface and mounting surface of the brake rotor.
   
3. Inspect the mating surfaces of the hub/axle flange and the rotor to ensure that there are no foreign particles or debris remaining.
   
4. Install the rotor. Slowly turn the rotor while pushing the rotor towards the axle. (15 series).
   
5. Install the rotor. Slowly turn the rotor while pushing the rotor towards the axle. (25 series).
   
6. Install the caliper and the mounting bracket as an assembly.
   
7. Install the tire and wheel assembly.
   
8. Lower the vehicle.
   

front or rear brake rotor? b sure to shut off the air ride system! the switch is located in the rear kick panel! lift and support front remove tires !the caliper has two mounting bolts remove those and hang caliper to the side using a metal coat hanger! now look at the bracket that was connected to the caliper remove those two bolts !the rotor should come off