🔧 Malibu - Rear Brake Pads & Rotor Replacement

You’ll be replacing the rear brake pads and rotors, then reassembling and torquing everything correctly. Worn pads/rotors can cause grinding, vibration, longer stopping distances, and uneven braking.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• 🛑 Work on level ground and use jack stands; never rely on a jack alone.
• 🧤 Wear safety glasses and mechanic gloves; brake dust and cleaner are irritating.
• 🔥 Brakes can be hot—let everything cool before starting.
• 🚫 Keep the parking brake released while removing rotors (your Malibu uses a drum-in-hat parking brake inside the rear rotor).
• 🧪 Do not let brake fluid overflow when compressing the caliper piston; check the brake fluid level often.
• 🧷 Never let the caliper hang by the brake hose—support it with a hook or bungee cord.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 19mm socket
• 1/2" drive breaker bar
• 1/2" drive torque wrench (20-200 ft-lbs range)
• 3/8" drive ratchet
• 3/8" drive torque wrench (10-80 ft-lbs range)
• 13mm socket
• 18mm socket
• Torx T30 bit
• Flathead screwdriver
• C-clamp or disc brake piston compressor (specialty)
• Caliper hanger hook or bungee cord
• Wire brush
• Rubber mallet
• Brake cleaner spray
• Shop towels
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set - Qty: 1
• Rear brake rotors - Qty: 2 (Replace in pairs)
• Rear brake hardware/abutment clip kit - Qty: 1
• Brake caliper slide pin grease (silicone) - Qty: 1
• Anti-seize compound - Qty: 1
• Brake fluid (DOT 3) - Qty: 1 quart

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📋 Before You Begin

• Park on a flat surface, set the transmission to P, and place wheel chocks at the front wheels.
• Release the parking brake fully (foot pedal should be up).
• Open the hood and check the brake fluid reservoir level. If it’s near “MAX,” remove a little with a clean towel so it doesn’t overflow when you compress the pistons.
• Tip: Take a photo of each side before disassembly.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the rear wheel lug nuts

• Use a 19mm socket and breaker bar to loosen (do not remove) the lug nuts while the car is on the ground.

Step 2: Lift and support the rear of the car

• Use a floor jack to lift the rear at the proper jacking point.
• Set the vehicle onto jack stands and give it a gentle push to confirm it’s stable.
• Remove the wheels using the 19mm socket.

Step 3: Remove the caliper (the part that squeezes the pads)

• Turn the steering wheel is not needed for the rear; position yourself for access.
• Use a 13mm socket and 3/8" ratchet to remove the two caliper guide/slide pin bolts.
• Lift the caliper off the bracket and support it with a caliper hanger hook or bungee cord.

Step 4: Remove the old pads and hardware clips

• Pull the inner and outer pads out of the bracket by hand.
• Remove the stainless hardware/abutment clips using a flathead screwdriver.
• Clean the pad “tracks” on the bracket with a wire brush and brake cleaner spray.
• Tip: Pads must slide freely to prevent uneven wear.

Step 5: Remove the caliper bracket

• Use an 18mm socket and breaker bar to remove the two caliper bracket bolts (these are usually tight).
• Remove the bracket and set it aside.
• On installation later: Torque caliper bracket bolts to 125 Nm (92 ft-lbs).

Step 6: Remove the rotor

• If your rotor has a retaining screw, remove it with a Torx T30 bit.
• Pull the rotor straight off. If it’s stuck, tap around the hat area with a rubber mallet and try again.
• If the rotor won’t come off, confirm the parking brake is fully released. (The parking brake shoes sit inside the rotor “hat” and can hold it.)

Step 7: Prep the hub and install the new rotor

• Clean rust from the hub face with a wire brush and wipe with brake cleaner spray.
• Apply a very thin layer of anti-seize compound to the hub face (avoid the wheel studs).
• Clean the new rotor with brake cleaner spray and shop towels to remove packing oil.
• Install the rotor. If equipped, reinstall the retaining screw with a Torx T30 bit (snug only; it’s not a structural fastener).

Step 8: Service and lube the slide pins (so the caliper can move)

• Pull the slide pins out of the bracket by hand.
• Wipe them clean with shop towels, then apply a thin coat of brake caliper slide pin grease (silicone).
• Reinstall slide pins and make sure they move smoothly.
• Tip: Never use regular grease on brake pins.

Step 9: Reinstall the caliper bracket and new hardware clips

• Reinstall the bracket using the 18mm socket and breaker bar.
• Torque caliper bracket bolts to 125 Nm (92 ft-lbs) using a 1/2" torque wrench.
• Install the new abutment/hardware clips onto the bracket by hand.

Step 10: Install the new pads

• Install the new inner and outer pads into the bracket.
• Make sure the pad ears sit correctly in the hardware clips and can slide.

Step 11: Compress the caliper piston and reinstall the caliper

• Place an old pad against the caliper piston.
• Use a C-clamp or disc brake piston compressor (specialty) to slowly push the piston fully back into the caliper.
• Reposition the caliper over the new pads.
• Install the two guide/slide pin bolts using a 13mm socket.
• Torque caliper guide/slide pin bolts to 35 Nm (26 ft-lbs) using a 3/8" torque wrench.
• Tip: If it won’t fit, piston isn’t fully compressed.

Step 12: Reinstall wheels and torque lug nuts

• Reinstall the wheels and hand-thread the lug nuts.
• Lower the car off the jack stands using the floor jack.
• Torque lug nuts in a star pattern using a 19mm socket and 1/2" torque wrench: Torque to 140 Nm (103 ft-lbs).

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✅ After Repair

• With the engine off, pump the brake pedal slowly 10-15 times until it feels firm (this seats the pistons against the new pads).
• Check the brake fluid level and top off with DOT 3 only if needed.
• Do a slow test drive and confirm: no grinding, car stops straight, pedal feels normal.
• Bed-in (break-in) the pads: make 6-10 medium stops from ~40 mph to ~10 mph, allowing ~30 seconds between stops for cooling. Avoid hard panic stops for the first 200 miles.
• Recheck lug nut torque after 25-50 miles: 140 Nm (103 ft-lbs).

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $140-$320 (parts only)

You Save: $310-$530 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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