🔧 Serpentine Belt - Replacement

The serpentine belt drives major accessories like the alternator, A/C compressor, water pump, and power steering system. On your Silverado, replacement is straightforward, but belt routing and tensioner control matter a lot to avoid damage or a thrown belt.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hours

---

⚠️ Safety & Precautions

• Let the engine cool fully before starting.
• Keep fingers, hair, and clothing away from the belt path and pulleys.
• Do not start the engine with the belt removed.
• Make sure the tensioner is fully released before installing the new belt.
• No battery disconnect is required for this repair.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 15mm socket or wrench
• Ratchet
• Breaker bar
• Flashlight
• Safety glasses
• Mechanic gloves
• Wheel chocks

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool down completely.
• Open the hood and locate the belt routing label on the radiator support or underside of the hood.
• Take a photo of the old belt routing first.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the belt and tensioner

• Open the hood and find the serpentine belt at the front of the engine.
• Find the belt tensioner pulley. This is the spring-loaded arm that keeps the belt tight.
• If there is a routing diagram, read it now or take a quick photo for reference.

Step 2: Release belt tension

• Use a 15mm socket or wrench on the tensioner.
• Rotate the tensioner arm to remove tension from the belt.
• Move smoothly; the spring is strong.

Step 3: Remove the old belt

• While holding the tensioner released, slip the belt off one smooth pulley first.
• Slowly let the tensioner return to its resting position.
• Remove the belt from the remaining pulleys by hand.

Step 4: Compare the new belt

• Lay the new belt next to the old one and make sure the length matches.
• Check that the rib count matches too. The ribs are the grooves on the belt.

Step 5: Install the new belt

• Route the belt around all pulleys except one easy-to-reach pulley.
• Use the 15mm socket or wrench again to release the tensioner.
• Slip the last section of belt onto the final pulley while holding tension off.
• Make sure every rib sits fully in every pulley groove.

Step 6: Verify the belt is seated correctly

• Inspect each pulley and confirm the belt is centered and not twisted.
• Turn the engine over by hand if needed only after the belt is installed.
• Check the routing one more time against the diagram.

Step 7: Start and inspect

• Start the engine and watch the belt for 30-60 seconds.
• Listen for squealing, chirping, or wobble.
• If the belt runs smoothly, the job is done.

---

✅ After Repair

• Run the engine and verify normal charging and steering operation.
• Check for belt noise with A/C on and off.
• Recheck belt alignment after a short test drive.

---

💰 DIY vs Shop Cost

Shop Cost: $150-$300 (parts + labor)

DIY Cost: $40-$90 (parts only)

You Save: $110-$210 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 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.