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2017 Cadillac CTS-V Brake Pulsation and Steering Wheel Shake at Highway Speeds

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

Vehicle: 2017 Cadillac CTS-V

Hey everyone,

I've got a 2017 Cadillac CTS-V with about 45,000 miles on it, and I'm experiencing a noticeable pulsation through the brake pedal and a shake in the steering wheel, especially when braking from highway speeds. It's not constant, but definitely happens when I'm slowing down from 60 MPH or more.

I just had the tires rotated and balanced about 2,000 miles ago, and the issue was present before and after. The car otherwise drives great, no strange noises when going straight. It's just the braking that's concerning me. Could this be warped rotors, or something else more serious? Any advice would be appreciated!

✓ Accepted solution

ClearTheCode Admin

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

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ClearTheCode admin answer:

Brake pulsation and steering wheel shake during braking are common symptoms that typically point to issues within your braking system. Given your description, it's likely related to your rotors or possibly other components.

  1. Diagnose the Cause:

    • Warped Rotors: This is the most common culprit. Overheating from repeated hard braking can cause the rotor surface to become uneven, leading to pulsation. While rotors don't technically 'warp' in the traditional sense, they can develop uneven thickness variation (runout) or hot spots that feel like warping.
    • Stuck Caliper: A caliper that isn't releasing properly can cause uneven pad wear and excessive heat, leading to rotor issues.
    • Wheel Bearing Issues: Less common for only braking, but a worn wheel bearing can contribute to vibration.
    • Tire/Wheel Imbalance (less likely for braking only): Since you mentioned it happens during braking, it's less likely to be a simple tire balance issue, but it's worth re-checking if other solutions don't work.

  2. Recommended Actions:

    • Inspect Rotors and Pads: A professional shop should measure rotor runout and thickness variation. Look for visible grooves, cracks, or blue/dark spots indicating overheating. Check brake pad wear for evenness.
    • Check Caliper Operation: Ensure calipers are sliding freely and pistons are retracting properly.
    • Check Wheel Bearings: While the wheels are off the ground, check for play in the wheel by grabbing it at 12 and 6 o'clock, then 3 and 9 o'clock.

  3. When to See a Shop:

    • You should see a qualified mechanic as soon as possible. Braking system issues compromise safety. Continuing to drive with significant brake pulsation can worsen the problem, potentially leading to premature wear of other suspension components or a reduction in braking effectiveness. A shop can accurately diagnose the root cause and recommend the appropriate repair, which may involve replacing or machining the rotors and replacing the brake pads.
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