🔧 Malibu - Power Steering Pump Replacement

You’ll remove the serpentine belt, disconnect the power steering lines, and swap the pump. On your Malibu, the pulley is a press-fit style, so you’ll also transfer/install the pulley with a puller/installer tool so belt alignment stays correct.

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

---

⚠️ Safety & Precautions

• 🛑 Work on a cool engine; keep hands clear of the belt path.
• 🛑 Support the car with jack stands if you raise it; never rely on a floor jack.
• 🛑 Power steering fluid is slippery and flammable; clean spills immediately.
• 🛑 Do not start the engine with the reservoir empty; pump damage can happen fast.
• 🛑 Disconnect the negative battery cable before working near the belt/pulley.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Wheel chocks
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Drain pan (at least 2-gallon)
• Shop rags
• 3/8" drive ratchet
• 3/8" drive torque wrench (10-100 ft-lbs)
• Socket set (8mm-18mm)
• 15mm socket
• Serpentine belt tool or 3/8" breaker bar
• Line wrench set (flare nut) including 16mm and 18mm
• Pliers
• Hose clamp pliers
• Flathead screwdriver
• Power steering pulley puller/installer set (specialty)
• Funnel

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Power steering pump - Qty: 1
• Power steering pump O-ring seal kit - Qty: 1
• Power steering fluid (GM-approved) - Qty: 2 quarts
• Serpentine belt - Qty: 1
• Return hose clamp - Qty: 1

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Use a 10mm socket to disconnect the negative battery cable and isolate it.
• Place a drain pan under the pump/lines area and lay down shop rags.
• Take a photo of the belt routing.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve belt tension and remove the serpentine belt

• Use a serpentine belt tool or 3/8" breaker bar on the belt tensioner to rotate it and relieve tension.
• Slip the belt off the power steering pump pulley first, then remove the belt from the other pulleys.
• If reusing the belt, mark its rotation direction with a marker.

Step 2: Drain the power steering fluid

• Remove the reservoir cap by hand.
• Use hose clamp pliers to compress the return-hose clamp, then slide the clamp back on the hose.
• Twist and pull the return hose off the reservoir/pump nipple using pliers as needed, and aim it into the drain pan.
• Let it drain fully; plug the hose end with a clean rag to reduce dripping.

Step 3: Remove the power steering pump pulley

• Use a power steering pulley puller/installer set (specialty) to pull the pulley off the pump shaft.
• A pulley puller/installer is a threaded tool that presses the pulley off/on without damaging the shaft.
• Keep the pulley clean; do not pry on it with a screwdriver.

Step 4: Disconnect the pressure line from the pump

• Place shop rags under the fitting.
• Use a line wrench (flare nut) 16mm or 18mm (whichever fits) to loosen the pressure line fitting at the pump.
• Once loose, finish by hand and catch fluid in the drain pan.
• Remove and discard the old O-ring seal(s) from the fitting/pump port.

Step 5: Unbolt and remove the pump

• Unplug any nearby electrical connectors that block access using your hands (do not pull on wires).
• Use a ratchet and the correct socket (typically 13mm-15mm) to remove the pump mounting bolts.
• Remove the pump from the bracket and lift it out.

Step 6: Transfer brackets (if equipped) and prep the new pump

• If the new pump does not include the same bracket/heat shield, transfer parts using a ratchet and appropriate socket.
• Lightly coat new O-ring seal(s) with fresh power steering fluid before installation.

Step 7: Install the new pump onto the engine

• Position the new pump and start all mounting bolts by hand to avoid cross-threading.
• Tighten bolts evenly using a ratchet, then finish with a torque wrench.
• Torque to 25 Nm (18 ft-lbs) for the pump mounting bolts.

Step 8: Reconnect the pressure line and return hose

• Thread the pressure fitting in by hand first.
• Use a line wrench to tighten the fitting, then use a torque wrench if your adapter allows.
• Torque to 27 Nm (20 ft-lbs) for the pressure line fitting at the pump.
• Reinstall the return hose and position the clamp using hose clamp pliers.

Step 9: Install the pulley onto the new pump

• Use the power steering pulley installer (specialty) to press the pulley onto the shaft.
• Press it until the pulley face aligns with the other belt pulleys (straight belt path).
• Do not hammer the pulley on.

Step 10: Reinstall the serpentine belt

• Route the belt using your photo/under-hood diagram.
• Use the serpentine belt tool or 3/8" breaker bar to rotate the tensioner, then slip the belt onto the last pulley.
• Visually confirm the belt is seated in every pulley groove.

Step 11: Fill and bleed the power steering system

• Fill the reservoir using a funnel with GM-approved power steering fluid to the “COLD” mark.
• With the front wheels off the ground (use floor jack and jack stands), keep the engine OFF.
• Slowly turn the steering wheel lock-to-lock 10-15 times to push air out.
• Top off fluid as the level drops; do not let it run dry.
• Reconnect the negative battery cable using a 10mm socket.
• Start the engine and let it idle; turn lock-to-lock 5-10 times, pausing at the ends briefly (do not hold hard against the stop).
• Shut off engine, recheck level, and top off to the correct mark.

---

✅ After Repair

• Start the engine and verify the steering is smooth and quiet.
• Check for leaks at the pressure fitting and return hose while the engine idles.
• Road test at low speed first, then recheck fluid level and look for fresh wet spots.
• If the fluid looks foamy, air is still present; repeat the bleed step.

---

💰 DIY vs Shop Cost

Shop Cost: $450-$900 (parts + labor)

DIY Cost: $120-$300 (parts only)

You Save: $330-$600 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.