🔧 Sierra 1500 - Front Strut Replacement

On your Sierra 1500, the “struts” people usually mean the front coilover strut assemblies (a shock with a coil spring around it). Replacing worn struts restores ride control, braking stability, and tire wear.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours (both sides)

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⚠️ Safety & Precautions

• ⚠️ The front coil spring is under high tension—do not disassemble the strut unless you have a spring compressor and know how to use it.
• ⚠️ Support the truck with jack stands on the frame; never rely on a floor jack alone.
• ⚠️ Keep hands clear of pinch points between the control arm/knuckle and strut.
• ⚠️ No battery disconnect is required for this repair.

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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
• Safety glasses
• Mechanic gloves
• Breaker bar (1/2")
• Torque wrench (1/2", 30-250 ft-lbs range)
• Socket set (metric, 10mm-24mm)
• Wrench set (metric, 10mm-24mm)
• 21mm socket
• 18mm socket
• 15mm socket
• Pry bar
• Hammer
• Penetrating oil
• Paint marker

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front strut assemblies (quick-struts) - Replace in pairs - Qty: 2
• Front upper strut mount nuts - Qty: 6
• Front strut-to-knuckle bolts and nuts - Replace in pairs - Qty: 4

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📋 Before You Begin

• Park on level ground, shift to P, and set the parking brake.
• Chock the rear wheels using wheel chocks.
• Loosen the front lug nuts 1/2 turn with a 21mm socket before lifting.
• Tip: Spray fasteners with penetrating oil first.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the front end

• Lift the front using a floor jack (rated 3-ton minimum) under the front crossmember.
• Set the truck onto jack stands (rated 3-ton minimum) at the frame rails.
• Remove the wheels with a 21mm socket.

Step 2: Disconnect the sway bar end link from the strut

• Locate the sway bar end link where it attaches to the strut.
• Remove the nut using an 18mm socket and an 18mm wrench to hold the stud if it spins.
• Push the end link out of the strut bracket by hand or with a light tap using a hammer.
• Torque to 75 Nm (55 ft-lbs) (reassembly)

Step 3: Remove the strut-to-steering knuckle bolts

• Support the lower control arm lightly with the floor jack (rated 3-ton minimum) so the suspension doesn’t drop suddenly.
• Mark the relationship of the strut to the knuckle using a paint marker.
• Remove the two large lower bolts/nuts using a 21mm socket and 21mm wrench (use a breaker bar (1/2") if needed).
• Tap the bolts out using a hammer if they’re tight.
• Torque to 150 Nm (111 ft-lbs) + 90° (reassembly)

Step 4: Remove the upper strut mount nuts

• Open the hood and locate the three upper strut mount nuts.
• Remove the three nuts using a 15mm socket.
• Keep one nut threaded a few turns until you’re ready to catch the strut.
• Torque to 25 Nm (18 ft-lbs) (reassembly)

Step 5: Remove the strut assembly

• Hold the strut from the wheel well, then remove the last top nut using a 15mm socket.
• Lower and maneuver the strut out of the wheel well.
• Tip: Turn the knuckle slightly for clearance.

Step 6: Install the new strut assembly

• Position the new strut in the wheel well (match orientation to the old one).
• Start the three upper nuts by hand, then snug with a 15mm socket (don’t fully torque yet).
• Align the lower strut holes to the knuckle and insert the bolts by hand.
• Tighten the lower bolts/nuts with a 21mm socket and 21mm wrench, then Torque to 150 Nm (111 ft-lbs) + 90°.
• Now torque the upper mount nuts using a torque wrench (1/2", 30-250 ft-lbs range): Torque to 25 Nm (18 ft-lbs).

Step 7: Reconnect the sway bar end link

• Insert the end link stud back into the strut bracket.
• Tighten with an 18mm socket and 18mm wrench.
• Torque to 75 Nm (55 ft-lbs)

Step 8: Reinstall wheels and lower the truck

• Reinstall wheels and snug lug nuts using a 21mm socket.
• Lower the truck off the stands using the floor jack (rated 3-ton minimum).
• Final tighten lug nuts in a star pattern using a torque wrench (1/2", 30-250 ft-lbs range): Torque to 190 Nm (140 ft-lbs).

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✅ After Repair

• Test drive at low speed first. Listen for clunks and confirm straight braking.
• Get a front-end alignment as soon as possible (recommended any time struts are replaced).
• Recheck lug nut torque after 25-50 miles using a torque wrench (1/2", 30-250 ft-lbs range).

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💰 DIY vs Shop Cost

Shop Cost: $900-$1,600 (parts + labor)

DIY Cost: $300-$800 (parts only)

You Save: $600-$800 by doing it yourself!

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

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🎯 Ready to get started?

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