🔧 Equinox - Timing Chain Replacement

Your Equinox 2.4L does not use a timing belt—it uses a timing chain. Replacing it is a big job because the front engine cover, engine mount, and timing components must come off, and the engine must be set precisely at Top Dead Center so valve timing stays correct.

Difficulty Level: Advanced | Estimated Time: 6-10 hours

---

⚠️ Safety & Precautions

• 🧯 Support the engine before removing the passenger-side engine mount.
• 🧤 Work only on a cold engine; coolant and oil will spill when covers come off.
• 🕶️ Disconnect the negative battery cable before starting.
• 🧱 Use jack stands; never rely on a jack alone.
• ⚠️ Many fasteners are torque-to-yield; reuse can cause failures.

---

🔧 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
• Nitrile gloves
• Drain pan (at least 10-quart)
• 3/8" drive ratchet
• 1/2" drive breaker bar
• Torque wrench (10-150 ft-lbs range)
• Torque angle gauge (specialty)
• Socket set (8mm-21mm)
• Wrench set (8mm-21mm)
• Torx bit set (T20-T50)
• E-Torx socket set (E10-E18)
• Screwdriver set
• Trim clip removal tool
• Serpentine belt tool (15mm)
• Harmonic balancer puller kit (specialty)
• Engine support bar (specialty)
• Gasket scraper
• RTV sealant applicator
• Shop rags
• Brake cleaner
• Paint marker

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Timing chain kit (primary chain, guides, tensioner) - Qty: 1
• Balance shaft chain kit - Qty: 1
• Front cover gasket set - Qty: 1
• Front crankshaft seal - Qty: 1
• Valve cover gasket - Qty: 1
• Crankshaft balancer bolt (torque-to-yield) - Qty: 1
• Engine oil (5W-30) - Qty: 5 quarts
• Oil filter - Qty: 1
• Dex-Cool coolant (50/50) - Qty: 2-3 gallons
• RTV silicone gasket maker - Qty: 1

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Disconnect the negative battery cable using a 10mm socket.
• Raise the right-front corner with a floor jack and support with jack stands; remove the right-front wheel using a 19mm socket.
• Remove the right-front inner splash shield using a trim clip removal tool and 7mm/10mm sockets.
• Take photos before unplugging connectors.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain coolant and prepare the work area

• Place a drain pan (at least 10-quart) under the radiator drain.
• Open the drain and remove the reservoir cap; use pliers if needed on the drain hose clamp.

Step 2: Remove the intake ducting and upper access items

• Loosen clamps with a flathead screwdriver and remove the intake duct.
• Disconnect any sensors by hand; use a pick tool only if a lock tab is stuck.

Step 3: Remove the serpentine belt

• Rotate the tensioner with a serpentine belt tool (15mm) and slip the belt off.
• Draw a belt routing sketch first.

Step 4: Support the engine and remove the passenger-side engine mount

• Install an engine support bar (specialty) across the strut towers and tension it to carry engine weight.
• Remove mount and bracket fasteners using socket set (13mm-18mm) and E-Torx sockets as equipped.
• Torque to OEM specification during reassembly (mount fasteners vary by design).

Step 5: Remove the crankshaft balancer (harmonic balancer)

• Remove the crank bolt using a 1/2" drive breaker bar and correct socket.
• Use a harmonic balancer puller kit (specialty) to pull the balancer straight off.
• Install a new crank bolt at reassembly and use a torque angle gauge (specialty).
• Torque to OEM specification (this bolt is torque-to-yield and is critical).

Step 6: Remove the valve cover

• Unplug coils and remove them with a 10mm socket.
• Remove valve cover bolts using a socket set and lift the cover off.
• Clean sealing surfaces with a gasket scraper and brake cleaner.
• Torque to OEM specification on reassembly (small bolts strip easily).

Step 7: Set cylinder #1 to Top Dead Center (TDC)

• Rotate the engine clockwise using a socket on the crank hub.
• Stop when the cam timing marks align per the chain kit instructions and the crank mark aligns with the front cover reference.
• Mark the relationship with a paint marker for a double-check.

Step 8: Remove the front cover

• Remove front cover fasteners using socket set and E-Torx sockets.
• Gently separate the cover; use a plastic trim tool if needed—avoid gouging aluminum.
• Remove and replace the front crankshaft seal (tap in square during reassembly).

Step 9: Remove timing components

• Relieve/remove the chain tensioner using the correct socket.
• Remove timing guides with a ratchet and correct socket.
• Remove the primary timing chain and, if replacing, the balance shaft chain per kit instructions.
• Keep bolts grouped by location.

Step 10: Install the new chains, guides, and tensioners

• Install sprockets/chains so the colored links align with the timing marks (use your kit’s diagram).
• Install new guides and tensioners using a torque wrench.
• Torque to OEM specification for cam phasers, guide bolts, and tensioner bolts (values vary by fastener).
• If your tensioner uses a retaining pin, pull the pin only after everything is aligned.

Step 11: Verify timing by hand-rotating the engine

• Rotate the crankshaft clockwise two full revolutions using a ratchet and socket.
• Re-check that timing marks return to the correct positions.
• If marks do not align, stop and correct before reassembly.

Step 12: Reinstall the front cover and valve cover

• Apply RTV silicone gasket maker only where required (typically at cover-to-head seams); spread with the applicator tip.
• Install the front cover and tighten bolts in an even pattern using a torque wrench.
• Torque to OEM specification for front cover bolts (mix of lengths is common).
• Install the valve cover with a new gasket; Torque to OEM specification.

Step 13: Reinstall the crank balancer, engine mount, belt, and remaining parts

• Press/install the balancer squarely; do not hammer it. Use the proper installer tool if required.
• Install a new crank bolt and tighten using a torque wrench and torque angle gauge (specialty).
• Torque to OEM specification (critical torque-to-yield fastener).
• Reinstall the engine mount, then remove the engine support bar (specialty).
• Reinstall the serpentine belt using the serpentine belt tool (15mm).
• Reinstall splash shield and wheel; tighten lug nuts with a torque wrench.
• Torque to OEM specification for wheel lug nuts.

Step 14: Refill fluids and change the oil

• Refill cooling system with Dex-Cool coolant (50/50).
• Change oil and filter (coolant/oil contamination can happen during this job).

---

✅ After Repair

• Start the engine and listen for abnormal rattling; a brief initial noise can happen as the tensioner fills with oil, but it should go away quickly.
• Check for leaks around the front cover, crank seal, and valve cover.
• Bring the engine to operating temp and verify the heater blows hot; top off coolant after it cools.
• If the check engine light comes on, scan for codes (timing correlation codes mean timing is off).

---

💰 DIY vs Shop Cost

Shop Cost: $1,200-$2,500 (parts + labor)

DIY Cost: $250-$650 (parts only)

You Save: $950-$1,850 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 6-10 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.