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2018 Cadillac XT5 Loud Squealing Brakes, Especially in Reverse

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Mike T. · rep 0 · May 25, 2:52 AM · 1 replies · solved · Question

Vehicle: 2018 Cadillac XT5 Luxury

Hey everyone,

I'm looking for some advice on my 2018 Cadillac XT5 Luxury. For the past few weeks, I've been getting a really loud, high-pitched squeal from the brakes, especially when I'm backing up. It also happens sometimes when I'm applying the brakes lightly going forward, particularly after the car has been sitting for a bit.

The car has about 60,000 miles on it, and I haven't had the pads replaced yet. I know it's probably time, but I wanted to check if there's anything else I should be looking out for. Is this just normal wear, or could it be something more serious than just needing new pads?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:52 AM

0

ClearTheCode admin answer:

Loud squealing brakes, especially after 60,000 miles without a pad replacement, are a very common indicator that your brake pads are worn down. However, there can be other contributing factors.

  1. Common Causes of Brake Squeal:

    • Worn Brake Pads: Most brake pads have a wear indicator (a small metal tab) that makes a high-pitched squeal when the pads are low, alerting you it's time for replacement. This is the most likely cause at 60,000 miles.
    • Glazed Rotors/Pads: If pads or rotors get excessively hot, their surfaces can harden or 'glaze,' leading to squealing noises.
    • Contamination: Oil, grease, or brake fluid on the pads or rotors can cause squealing.
    • Rust on Rotors: Surface rust, especially after the car sits in damp conditions, can cause noise until it's worn off after a few brake applications. This is often more noticeable in reverse initially.
    • Improper Installation: If pads were recently replaced, incorrect shims or lack of lubricant on contact points can cause noise.
    • Poor Quality Pads: Some aftermarket pads are simply noisier than OEM.

  2. Recommended Actions:

    • Immediate Inspection: Have a mechanic inspect your brake pads and rotors. They will check the pad thickness, look for uneven wear, and inspect the rotors for excessive wear, scoring, or glazing.
    • Brake Service: If pads are worn, a full brake service including new pads and rotor machining (if rotors are within specification) or replacement is typically recommended. Ensure the calipers are sliding freely and all hardware is properly lubricated.

  3. When to See a Shop:

    • You should get your brakes inspected very soon. While a squeal from worn pads isn't an immediate emergency, it's a warning. If the pads wear completely through, you'll hear a grinding noise (metal-on-metal), which can quickly damage your rotors and lead to significantly higher repair costs, not to mention a severe reduction in braking performance and safety. Don't delay this service.
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