thanks for your advice on my brakes! You wrote: Sounds like the caliper mounting bolts are tightened all the way down causing movement when the brakes are applied. Simply remove the tires and check the 2 mounting bolts that mount the caliper to the bracket.
Do you know how far down the bolts on the calipers should be tightened?
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Wheel Brake hose from the caliper Caliper mounting bolts Caliper
Install or connect the following:
CaliperCaliper mounting bolts and tighten to 58-73 ft. lbs. (80-100 Nm) on the front caliper, or 37-44 ft. lbs. 50-60 Nm) on the rear caliper.Brake hose to the caliper and tighten the fitting too 18-22 ft. lbs. (25-30 Nm)Wheel
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.
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.
Remove the rotor retaining push nuts from the wheel studs, if applicable.
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.
Remove the rotor by slowly fuming the rotor while pulling the rotor away from the axle.
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.
Use the J42450-A to clean all rust and contaminants from the mating surface of the hub flange.
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.
Install the rotor by slowly fuming the rotor while pushing the rotor towards the axle.
Install the caliper and the bracket as an assembly to the vehicle.
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.
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.).
Install the tire and wheel assembly.
Lower the vehicle.
With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
Slowly release the brake pedal.
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.
Fill the master cylinder reservoir to the proper level with clean brake fluid.
Install a large C-clamp over the top of the brake caliper housing and against the back of the outboard brake pad.
Slowly tighten the C-clamp until the piston pushes into the brake caliper enough to slide the brake caliper off the rotor.
Remove the C-clamp from the brake caliper.
Remove the lower mounting bolt from the slide pin.
After you have removed the caliper from the caliper mounting bracket, remove the pads and guides. Make sure you have fully depressed the caliper's piston fully then you can start by putting the little guides back in then reloading the new pads back in the caliper. Be sure to use some caliper grease on the caliper mounting bolts (the bolts that hold the caliper in place). If you don't use grease on these mounting bolts, your caliper won't slide right and you can have uneven wear on your pads. This could easily cause overheating. Once you place the caliper back in the mounting bracket and tighten the caliper mounting bolts back down tight you are all done. Put your wheel back on and tighten the lug nuts and you're done!
MAKE SURE WHEN YOU FIRST START THE TRUCK FOR A TEST DRIVE AFTER INSTALLING THE BRAKES, YOU NEED TO PUMP THE BRAKES BACK UP!!!! IF YOU DON'T YOU WILL START DRIVING AND HAVE NO BRAKES!!! PUMP YOUR BRAKES ABOUT 10-15 TIMES FULLY OR UNTIL THE BRAKE PETAL SEEMS FIRM. ALLOW THE BRAKE PETAL TO COME ALL THE WAY BACK UP BEFORE PUMPING THEM AGAIN.
Sounds like the caliper mounting bolts are tightened all the way down causing movement when the brakes are applied. Simply remove the tires and check the 2 mounting bolts that mount the caliper to the bracket.
Sorry I don't know how I missed it (rear)
wash the brake assembly
depress the piston using a C-clamp
Remove the upper caliper mounting bolt
Pivot the caliper down for access to the brake pads
Remove the inner brake pad and the outer brake pad
Remove the upper and lower pad support plates; make sure they are a tight fit and aren't worn. If necessary replace them
Install the brake pads in the caliper mounting bracket
pull out the sliding pins, cleanthem, then apply a coat of high-temperature grease to the pins and install them.
Replace any boots that are worn or damaged
Swing the caliper back into place, install the bolt and tighten
Caliper mounting bolt torque is 16 to 24 ft-lb
rear caliper mounting bracket bolt is 37 to 44 ft-lb