🔧 Malibu - Rear Brake Pad and Rotor Replacement

This repair replaces both rear brake rotors and the complete rear brake-pad set. Your Malibu has an electronic parking brake, so the rear calipers must be placed in service mode with a compatible bidirectional scan tool before the pistons are compressed.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours

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⚠️ Safety & Precautions

• ⚠️ Never work beneath a Malibu supported only by a floor jack. Always use correctly rated jack stands.
• ⚠️ Replace rear pads and rotors on both sides to maintain balanced braking.
• ⚠️ Do not press the brake pedal while a caliper is removed.
• ⚠️ Do not operate the electronic parking-brake switch while either rear caliper is removed.
• ⚠️ Electronic parking-brake service mode requires a bidirectional scan tool capable of commanding GM parking-brake functions.
• ⚠️ Keep grease and brake cleaner away from pad friction material and rotor braking surfaces.
• ⚠️ Do not disconnect the battery; stable battery voltage is required while operating the scan tool.

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🔧 Required Tools

You'll need the following tools for this repair:

• OBD-II bidirectional scan tool with GM electronic parking-brake support (specialty)
• 12-volt battery maintainer rated 5-10 amps (specialty)
• Floor jack rated 2-ton minimum
• Jack stands rated 2-ton minimum
• Wheel chocks rated for passenger vehicles
• 1/2-inch drive breaker bar
• 1/2-inch drive torque wrench rated 40-150 ft-lbs
• 3/8-inch drive torque wrench rated 5-80 ft-lbs
• 3/8-inch drive ratchet
• 19mm deep socket
• 14mm socket
• 18mm socket
• Torx T30 bit socket
• 6-inch socket extension
• Rear brake piston compression tool (specialty)
• Small flat-blade screwdriver
• 12-inch bungee cord
• 16-ounce ball-peen hammer
• 6-inch wire brush
• Plastic drain pan rated 1-gallon minimum
• Disposable nitrile gloves
• ANSI Z87.1 safety glasses
• NIOSH-approved particulate mask

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set with wear indicators - Qty: 1
• Rear brake rotors - Replace in pairs - Qty: 2
• Rear brake pad hardware kit - Qty: 1
• High-temperature ceramic brake lubricant - Qty: 1
• Non-chlorinated brake cleaner - Qty: 2 cans

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📋 Before You Begin

• 📋 Park your Malibu on solid, level ground. Put the transmission in Park and leave the electronic parking brake released.
• 📋 Place wheel chocks securely in front of and behind both front tires.
• 📋 Allow the brakes to cool completely before touching them.
• 📋 Connect the battery maintainer according to its instructions. A battery maintainer keeps voltage steady while the scan tool operates the parking-brake motors.
• 📋 Connect the bidirectional scan tool to the diagnostic connector beneath the driver-side dashboard.
• 📋 Use the scan tool path appropriate to the tool: Chevrolet > Malibu > 2018 > Chassis > Electronic Parking Brake > Brake Pad Replacement Mode. Command the rear parking-brake actuators to retract.
• 📋 Confirm that the scan tool reports service mode active before raising the vehicle.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Rear Wheel Nuts

• Use a 19mm deep socket and 1/2-inch breaker bar to loosen each rear wheel nut approximately one-quarter turn.
• Do not remove the wheel nuts while the tires are supporting the vehicle.

Step 2: Raise and Support the Rear

• Position the 2-ton floor jack beneath the specified rear-center lifting point.
• Raise the rear and place 2-ton jack stands beneath the reinforced rear side support points.
• Lower the vehicle gently onto the stands, then push the body lightly to confirm it is stable.
• Keep the floor jack nearby as secondary support.

Step 3: Remove Both Rear Wheels

• Use the 19mm deep socket and 3/8-inch ratchet to remove the wheel nuts.
• Remove both rear wheels and place them flat away from the work area.

Step 4: Remove the Rear Caliper

• Work on one side at a time so the assembled side remains a reference.
• Use a 14mm socket and 3/8-inch ratchet to remove the upper and lower caliper guide-pin bolts.
• Lift the caliper from the bracket. Support it from the suspension with the 12-inch bungee cord.
• Do not allow the caliper to hang from its rubber brake hose or parking-brake wiring.

Step 5: Remove the Old Brake Pads

• Pull the inner and outer pads from the caliper bracket by hand.
• Use a small flat-blade screwdriver to remove the old stainless-steel pad clips.
• Note the position of the wear indicator so the new pads can be installed in the same orientation.

Step 6: Compress the Caliper Piston

• Check that electronic parking-brake service mode remains active on the scan tool.
• Place an old brake pad against the piston, then use the rear brake piston compression tool to press the piston slowly and evenly into the caliper.
• Do not force or rotate the piston. If it will not move with moderate pressure, stop and verify that the parking-brake actuator is fully retracted.
• Watch the brake-fluid reservoir while compressing the piston. Remove excess fluid only if it approaches the reservoir rim.

Step 7: Remove the Caliper Bracket

• Use an 18mm socket, 6-inch extension, and 1/2-inch breaker bar to remove the two caliper-bracket bolts.
• Remove the bracket and place it on a clean work surface.

Step 8: Remove the Old Rotor

• Use a Torx T30 bit socket and 3/8-inch ratchet to remove the rotor retaining screw.
• If the rotor is rusted to the hub, strike only the rotor hat between the wheel studs with the 16-ounce ball-peen hammer.
• Remove the rotor and place it in the drain pan.
• Never strike the wheel studs or hub bearing.

Step 9: Clean the Hub and Bracket

• Wear safety glasses, gloves, and a particulate mask.
• Use the 6-inch wire brush to remove rust from the hub face and the caliper-bracket pad-contact areas.
• Use non-chlorinated brake cleaner over the drain pan to wash away loose residue.
• Make sure the hub face is smooth; trapped rust can make the new rotor wobble.

Step 10: Install the New Rotor

• Clean both sides of the new rotor with non-chlorinated brake cleaner and wipe it with a clean disposable towel.
• Place the rotor squarely over the wheel studs.
• Install the retaining screw with the Torx T30 bit socket and torque wrench. Torque to 9 Nm (80 in-lbs).

Step 11: Service and Install the Caliper Bracket

• Confirm both guide pins slide freely in their rubber boots. A guide pin allows the caliper to move evenly as the brakes apply.
• Use the 6-inch wire brush to clean the pad-contact lands, then install the new hardware clips by hand.
• Apply a very thin layer of high-temperature ceramic brake lubricant beneath the hardware and to the pad ears only.
• Keep lubricant away from the rotor and pad friction surfaces.
• Position the bracket and start both bolts by hand.
• Use an 18mm socket and 1/2-inch torque wrench to tighten the bracket bolts. Torque to 100 Nm (74 ft-lbs).

Step 12: Install the New Pads and Caliper

• Slide the new inner and outer pads into the bracket with the friction material facing the rotor.
• Lower the supported caliper over the pads without twisting the brake hose.
• Start both guide-pin bolts by hand to avoid cross-threading.
• Use a 14mm socket and 3/8-inch torque wrench to tighten the guide-pin bolts. Torque to 28 Nm (21 ft-lbs).

Step 13: Repeat on the Opposite Side

• Repeat Steps 4 through 12 on the other rear wheel using the same listed tools and torque specifications.
• Before installing the wheels, inspect both brake hoses, parking-brake connectors, guide-pin boots, and calipers for damage or leaks.

Step 14: Reinstall the Wheels

• Place each wheel onto the hub and install all wheel nuts by hand.
• Use the 19mm deep socket and 3/8-inch ratchet to snug the nuts in a star pattern.
• Raise the rear slightly with the 2-ton floor jack, remove the jack stands, and lower the vehicle fully.
• Use the 19mm deep socket and 1/2-inch torque wrench to tighten the wheel nuts in a star pattern. Torque to 140 Nm (103 ft-lbs).

Step 15: Restore the Electronic Parking Brake

• With the ignition on and the engine off, use the bidirectional scan tool to select Electronic Parking Brake > Exit Brake Pad Replacement Mode.
• Follow the scan-tool prompts to extend and calibrate both parking-brake actuators.
• Operate the parking-brake switch once to apply it and once to release it.
• Use the scan tool to check the electronic parking-brake and ABS modules for diagnostic trouble codes.

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✅ After Repair

• ✅ Before moving your Malibu, press the brake pedal repeatedly until it becomes firm. The first several presses may travel farther than normal.
• ✅ Check the brake-fluid level and confirm it is between the MIN and MAX marks.
• ✅ Start the engine and confirm the red brake warning and amber ABS warning lamps turn off normally.
• ✅ Apply and release the electronic parking brake twice. Listen for smooth, equal operation from both rear calipers.
• ✅ Check around both calipers for fluid leaks and verify the parking-brake wiring is secure.
• ✅ Perform a slow brake test in a traffic-free area before normal driving.
• ✅ Bed in the pads with 8-10 moderate stops from approximately 50 km/h to 10 km/h. Allow about 30 seconds of cooling between stops and avoid coming to a complete stop with hot brakes.
• ✅ Avoid hard braking and prolonged brake-pedal holding for the first 300 km unless required for safety.
• ✅ Recheck wheel-nut torque after approximately 80-100 km.

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💰 DIY vs Shop Cost

Shop Cost: ₹22,000-₹38,000 (parts + labor)

DIY Cost: ₹10,000-₹22,000 (parts only; scan-tool purchase or rental not included)

You Save: ₹12,000-₹16,000 by doing it yourself!

Local labor rates vary. This repair takes a shop approximately 1.5-2.5 hours.

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