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Squealing Noise on 2019 Regal TourX - Serpentine Belt?

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Chris P. · rep 0 · May 22, 3:53 AM · 1 replies · solved · Question

Vehicle: 2019 Buick Regal TourX Essence

Hello Buick owners,

I've got a 2019 Buick Regal TourX Essence with about 60,000 miles on it. For the past few weeks, I've been hearing a distinct squealing noise, especially when I first start the car in the morning or after it's been sitting for a while. It usually goes away after a few minutes of driving, but it's getting louder and lasting longer.

I suspect it might be the serpentine belt, but I'm not entirely sure. I've heard that sometimes it could be a pulley too. What are the typical signs of a worn serpentine belt on these models? Is this something I can inspect myself, and if so, what should I look for?

Also, what's the general lifespan for a serpentine belt on a Regal TourX, and is it a difficult DIY job or better left to a professional? Thanks for any insights!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:53 AM

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ClearTheCode admin answer:

The squealing noise you're describing on your 2019 Buick Regal TourX Essence is a classic symptom of a worn or misaligned serpentine belt, or potentially a failing accessory pulley. At 60,000 miles, it's definitely within the range where these components might start showing wear.

Here's how to diagnose and address the issue:

  1. Inspecting the Serpentine Belt:
    • Visual Check: With the engine off and cool, carefully inspect the belt for cracks, fraying, glazing (a shiny, smooth appearance), or missing ribs. A healthy belt should look dull and have clear, defined ribs.
    • Tension: While you can't easily check tension without a tool, a loose belt can slip and squeal. The automatic tensioner should keep it taut.
    • Water Test (Caution!): Briefly and carefully spray a small amount of water onto the ribbed side of the belt while the engine is running and squealing. If the noise temporarily stops, it's almost certainly the belt. If it doesn't, the issue might be a pulley.
  2. Identifying a Bad Pulley:
    • Spin Test: With the belt removed (engine off!), manually spin each pulley (alternator, power steering pump, AC compressor, idler pulley, tensioner pulley). Listen for grinding, squeaking, or excessive play. A healthy pulley should spin smoothly and silently.
    • Wobble: Check for any wobble in the pulleys as they spin.
  3. Lifespan: Serpentine belts typically last between 50,000 to 100,000 miles, depending on driving conditions and material quality. At 60,000 miles, yours is due for a close inspection and potential replacement.
  4. DIY Difficulty: Replacing a serpentine belt on a Regal TourX is generally considered a moderate DIY job. You'll need a serpentine belt tool (or a long breaker bar/ratchet) to release the tensioner, and it helps to have a diagram of the belt routing. If you're comfortable working under the hood and have the right tools, it's doable. However, if you're unsure, or if a pulley needs replacement, it's best to consult a professional.

When to See a Shop: If the squealing persists after inspecting the belt, or if you identify a noisy or wobbly pulley, it's time to visit a mechanic. A failing pulley can seize and cause the belt to break, leading to a loss of power steering, alternator function, and potentially overheating. It's better to address it proactively.

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