🔧 Equinox - Front Lower Control Arm Replacement

You’ll be removing each front lower control arm and its ball joint from the steering knuckle and front subframe, then installing new arms with fresh bushings and ball joints. This restores stable steering, reduces clunks, and helps protect your tires from uneven wear.

Difficulty Level: Intermediate | Estimated Time: 3–4 hours (for both sides, first-time DIY)

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⚠️ Safety & Precautions

• ⚠️ Always support the Equinox with jack stands; never rely on a floor jack alone.
• ⚠️ Work on level, solid ground and chock the rear wheels so the vehicle cannot roll.
• ⚠️ Suspension parts are under tension; keep fingers clear of pinch points when loosening ball joints.
• ⚠️ Wear safety glasses; rust and debris can fall while working under the vehicle.
• ⚠️ After replacing control arms, a professional wheel alignment is required to avoid rapid tire wear and poor handling.
• ⚠️ If any fastener threads are badly rusted or stretched, replace the bolts and nuts for safety.

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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, Qty: 2)
• 🛠️ Wheel chocks
• 🛠️ Breaker bar 1/2" drive
• 🛠️ Torque wrench 1/2" drive (up to 200 Nm / 150 ft-lbs)
• 🛠️ Torque wrench 3/8" drive (up to 80 Nm / 60 ft-lbs)
• 🛠️ Socket set 3/8" and 1/2" drive (8mm–21mm)
• 🛠️ 18mm socket
• 🛠️ 19mm deep socket
• 🛠️ 21mm socket
• 🛠️ 18mm combination wrench
• 🛠️ 19mm combination wrench
• 🛠️ Pry bar 18–24" (a strong lever to move suspension parts)
• 🛠️ Ball joint separator (pickle fork) (specialty) (tool to separate ball joint taper)
• 🛠️ Hammer (2–3 lb)
• 🛠️ Flathead screwdriver (medium)
• 🛠️ Needle-nose pliers
• 🛠️ Penetrating oil spray
• 🛠️ Wire brush
• 🛠️ Paint marker or white marker pen
• 🛠️ Ratcheting strap or bungee cord
• 🛠️ Mechanic’s gloves
• 🛠️ Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 🔩 Front left lower control arm with ball joint - Qty: 1
• 🔩 Front right lower control arm with ball joint - Qty: 1
• 🔩 Front lower control arm mounting bolts and nuts kit - Qty: 1 set (recommended)
• 🔩 Front ball joint pinch bolt and nut set - Qty: 2
• 🔩 Anti-seize compound - Qty: 1 small tube
• 🔩 Rust penetrant / light oil - Qty: 1 can
• 🔩 Brake cleaner spray - Qty: 1 can

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📋 Before You Begin

• Park the Equinox on level ground, shift to Park, and set the parking brake.
• Place wheel chocks behind both rear wheels.
• Loosen (but do not remove) the front wheel lug nuts 1/2 turn with a 19mm deep socket while the vehicle is still on the ground.
• You do not need to disconnect the battery for this job.
• Plan to drive to an alignment shop immediately after finishing the repair.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and support the front of the Equinox

• Use the floor jack (3-ton) under the front subframe center to raise the front of the vehicle until both front wheels are off the ground.
• Place jack stands (3-ton) under the factory pinch weld points or subframe support points on both sides.
• Lower the vehicle gently onto the stands with the floor jack and make sure it is stable by giving the body a firm shake.
• Remove both front wheels using a 19mm deep socket and breaker bar.

Step 2: Identify the lower control arm and fasteners

• The lower control arm is the large, curved metal arm running from the front subframe to the wheel hub area.
• Locate:
  • The front bushing bolt where the arm meets the front of the subframe.
  • The rear bushing bolt where the arm meets the rear of the subframe.
  • The ball joint stud and pinch bolt where the arm meets the steering knuckle (the vertical part holding the brake and hub).
• Spray all visible bolts and nuts with penetrating oil spray and let it soak for at least 5–10 minutes.

Step 3: Support the steering knuckle

• Hook a ratcheting strap or bungee cord from the coil spring or strut to a solid point on the body to help hold the steering knuckle in place.
• This prevents stress on the brake hose and axle.

Step 4: Remove the ball joint pinch bolt

• Locate the ball joint connection at the bottom of the steering knuckle; you’ll see a slot with a horizontal bolt going through (the pinch bolt).
• Use a 18mm socket and breaker bar on the bolt head and an 18mm combination wrench on the nut (if present) to loosen and remove the pinch bolt.
• If the bolt is stuck, tap the end lightly with a hammer while turning the breaker bar.
• Clean the slot area with a wire brush and spray more penetrating oil into the joint.

Step 5: Separate the ball joint from the steering knuckle

• Insert the ball joint separator (pickle fork) between the bottom of the steering knuckle and the control arm ball joint.
• Tap the pickle fork with a hammer to force the joint apart.
• Alternatively, place a pry bar under the control arm and push down while tapping the knuckle around the ball joint area with a hammer.
• Once separated, the ball joint stud will drop free from the knuckle; keep the knuckle supported with the strap or bungee.

Step 6: Mark current control arm position (alignment reference)

• Use a paint marker to outline the control arm bushing brackets where they meet the subframe.
• This gives a reference when installing the new arm.

Step 7: Remove the rear bushing bolt

• Locate the rear bushing mount where the control arm attaches to the subframe (toward the rear of the car).
• Use a 18mm socket and breaker bar to loosen and remove the rear bushing bolt and nut.
• Keep track of any washers or spacers in the order they were installed.

Step 8: Remove the front bushing bolt and control arm

• Locate the front bushing mount at the front of the subframe.
• Use a 18mm socket and breaker bar to remove the front bushing bolt.
• Wiggle and pull the control arm free from the subframe; you may need a pry bar to help lever it out.
• Remove the old control arm completely from the vehicle.

Step 9: Prepare mounting surfaces and new control arm

• Clean the subframe mounting areas with a wire brush and wipe with brake cleaner spray.
• Apply a light film of anti-seize compound to the bushing bolt threads and to the ball joint stud (not on the tapered seating area).
• Compare the old and new control arms to ensure the shape, length, and bushing/ball joint positions match.

Step 10: Install the new control arm into the subframe

• Position the new control arm in place, inserting the rear bushing into its bracket first.
• Install the rear bushing bolt by hand using an 18mm socket but do not fully tighten yet.
• Install the front bushing bolt by hand using an 18mm socket, again leaving it slightly loose.
• Align the bushing brackets with your paint marker reference lines as closely as possible.

Step 11: Reconnect the ball joint to the steering knuckle

• Use a pry bar to push the control arm downward so the ball joint stud can line up with the steering knuckle opening.
• Guide the ball joint stud into the knuckle; you may need to adjust the knuckle slightly by hand.
• Once the stud is fully seated, reinstall the ball joint pinch bolt with an 18mm socket and 18mm wrench.
• Tighten the ball joint pinch bolt to 50 Nm (37 ft-lbs) using a 3/8" torque wrench and 18mm socket.

Step 12: Pre-tighten control arm bushing bolts at ride height

• To avoid twisting the rubber bushings, the bolts must be tightened with the suspension at normal ride height.
• Place the floor jack under the outer end (ball joint area) of the control arm.
• Raise the control arm with the jack until the vehicle just begins to lift off the jack stand slightly (this simulates ride height).
• While holding this position, snug the front and rear bushing bolts with an 18mm socket and breaker bar.

Step 13: Torque the control arm bushing bolts

• With the arm still at simulated ride height, use a 1/2" torque wrench and 18mm socket to tighten:
  • Front bushing bolt: tighten to 110 Nm (81 ft-lbs) + 90° (turn an additional quarter turn after reaching torque).
  • Rear bushing bolt: tighten to 130 Nm (96 ft-lbs) + 90°.
• Use a paint mark on bolt head to track the extra 90° turn.
• Lower the floor jack and remove it from under the control arm.

Step 14: Repeat on the other side

• Repeat Steps 2–13 for the other front lower control arm (it’s a mirror image).
• Doing both sides keeps handling balanced.

Step 15: Reinstall wheels and lower the Equinox

• Reinstall the front wheels and hand-tighten lug nuts using a 19mm deep socket.
• Raise the vehicle slightly with the floor jack, remove the jack stands, then lower the vehicle fully to the ground.
• Torque the lug nuts in a star pattern to 140 Nm (100 ft-lbs) using a 1/2" torque wrench and 19mm deep socket.

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✅ After Repair

• Start the engine and slowly turn the steering wheel from lock to lock while stationary to confirm there are no clunks or binding noises.
• Take a short, gentle test drive at low speed to check for noises and to ensure the steering wheel feels normal.
• Schedule a 4-wheel alignment as soon as possible; inform the shop that both front lower control arms were replaced.
• After the first 50–100 km, recheck the control arm bolts and lug nuts for tightness if possible.

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💰 DIY vs Shop Cost

Shop Cost: $450–$750 (parts + labor for both front control arms, not including alignment)

DIY Cost: $150–$280 (parts only, both sides)

You Save: $300–$470 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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