🔧 Telluride - Serpentine Belt Replacement

The serpentine belt drives key accessories like the alternator, A/C compressor, and power steering (if equipped). Replacing it is mostly about safely releasing the belt tensioner, swapping the belt, and confirming the routing is correct.

Difficulty Level: Intermediate | Estimated Time: 0.5-1.5 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a cold engine; hot pulleys can burn you.
• ⚠️ Keep fingers/hair/clothing away from the belt path.
• ⚠️ Do not start the engine until tools are removed and the belt is fully seated.
• ⚠️ If you must raise the vehicle for access, support it with jack stands on solid ground.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Mechanic gloves
• LED work light
• Serpentine belt tool (specialty)
• 3/8" drive ratchet
• 3/8" drive breaker bar
• Socket set 10mm-19mm
• 3/8" drive extension set 3"-10"
• Trim clip removal tool
• Flathead screwdriver
• Torque wrench 10-150 ft-lbs
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Chock the rear wheels using wheel chocks.
• Open the hood and locate the belt routing diagram (often on a sticker near the radiator support). If it’s missing, take a clear photo of the current routing before removal.
• Identify the belt tensioner (a spring-loaded arm/pulley that keeps the belt tight).

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm belt routing and pulley condition

• Use an LED work light to inspect the belt for cracks, fraying, missing ribs, or glazing (shiny/slippery look).
• Spin any easy-to-reach smooth pulleys by hand (engine OFF) to feel for roughness or wobble.
• If a routing sticker is present, take a photo. If not, draw a quick sketch of how the belt wraps each pulley.

Step 2: Create access (only if needed)

• If your access from above is tight, remove any plastic covers or air ducting in the way using a trim clip removal tool and flathead screwdriver.
• If you need additional access from below, raise the front safely with a floor jack (rated 3-ton minimum) and support with jack stands (rated 3-ton minimum).

Step 3: Release tension from the belt tensioner

• Fit a serpentine belt tool (specialty) or a 3/8" drive breaker bar onto the tensioner’s hex head or square drive (varies by tensioner).
• Rotate the tensioner slowly to relieve belt tension. Move it smoothly; it’s spring-loaded.
• While holding the tensioner rotated, slide the belt off the easiest-to-reach upper pulley using your free hand (wear mechanic gloves).

Step 4: Remove the old belt

• Carefully let the tensioner return to its resting position (do not let it snap back).
• Pull the belt out of the engine bay, noting how it was routed.

Step 5: Route the new belt

• Compare the old and new belts side-by-side to confirm the length and rib count match.
• Route the new belt following the under-hood routing diagram (or your photo/sketch).
• Keep the belt fully seated in the grooved pulleys’ ribs as you route it.
• Leave the belt off one easy-to-reach pulley (usually an upper smooth/idler pulley) for last.

Step 6: Re-apply tension and seat the belt

• Use the serpentine belt tool (specialty) or 3/8" drive breaker bar to rotate the tensioner again.
• Slip the belt onto the last pulley, then slowly release the tensioner.
• Re-check every pulley: the belt ribs must sit perfectly in the grooves, and the belt must be centered on smooth pulleys.

Step 7: Reinstall any removed covers

• Reinstall any ducting/covers you removed using the trim clip removal tool and flathead screwdriver.
• If you raised the vehicle, lower it carefully using the floor jack (rated 3-ton minimum) and remove the jack stands (rated 3-ton minimum).

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✅ After Repair

• Start the engine and let it idle while you watch the belt for 30-60 seconds (keep hands/tools clear).
• Listen for squealing, chirping, or slapping noises.
• Turn the A/C on and off and confirm no noise changes or belt wandering.
• Shut the engine off and do a final visual check that the belt is still fully seated.

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💰 DIY vs Shop Cost

Shop Cost: $180-$350 (parts + labor)

DIY Cost: $35-$90 (parts only)

You Save: $145-$260 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.7-1.2 hours.

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🎯 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.