The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

Stabilitrak/ABS Warning & Reduced Power on my 2018 XT5

0

Mike T. · rep 0 · May 24, 1:47 PM · 1 replies · solved · Question

Vehicle: 2018 Cadillac XT5 Luxury

Hey everyone, I'm hoping someone here has experienced something similar. My 2018 Cadillac XT5 Luxury, with about 75,000 miles, recently started throwing some warning lights.

While driving, the 'Service Stabilitrak' message pops up, followed by the ABS warning light, and sometimes a 'Reduced Engine Power' notification. The car doesn't feel right when this happens; it's sluggish and the transmission shifts feel off. It usually clears after turning the car off and on again, but it's becoming more frequent.

I haven't pulled any specific OBD codes yet, but I'm wondering if this is a common reliability issue for this model year or if there's a known TSB for it. Any advice on where to start looking or what parts might be failing would be greatly appreciated before I take it to the dealership.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 24, 1:47 PM

0

ClearTheCode admin answer:

This is a relatively common issue across many GM platforms, including your 2018 Cadillac XT5, and it typically points to a fault within the vehicle's wheel speed sensor system or related components. The Stabilitrak, ABS, and Reduced Engine Power warnings are interconnected because these systems rely on accurate wheel speed data.

Here's a breakdown of common causes and next steps:

  1. Diagnose with an OBD-II Scanner: The first crucial step is to get the vehicle scanned for diagnostic trouble codes (DTCs). While you mentioned not having pulled codes yet, these symptoms almost certainly generate specific codes. Look for:

    • C-codes (Chassis codes): These relate to ABS/Stabilitrak systems. Common ones include C0035-C0050 (for specific wheel speed sensor circuits).
    • P-codes (Powertrain codes): Less common for this specific issue, but a P0500 (Vehicle Speed Sensor Malfunction) could appear if the primary speed input is faulty.

  2. Common Causes:

    • Faulty Wheel Speed Sensor: This is the most frequent culprit. Sensors can fail due to wear, road debris, or wiring damage. A single faulty sensor can trigger all these warnings.
    • Damaged Wiring Harness: The wiring leading to the wheel speed sensors can become frayed, corroded, or damaged, leading to intermittent signals.
    • Corroded Wheel Hub/Bearing: The magnetic ring that the wheel speed sensor reads from can become corroded or damaged, leading to incorrect readings.
    • ABS Module Failure: While less common than sensor issues, a failing ABS control module can also cause these symptoms. This is a more expensive repair.

  3. When to See a Shop:

    • Immediately if the Reduced Engine Power is constant or severe: Driving with reduced power can be dangerous and potentially cause further damage.
    • If you cannot identify or replace the faulty sensor yourself: Wheel speed sensor replacement often requires lifting the vehicle, removing the wheel, and sometimes dealing with rusted bolts.
    • If the issue persists after replacing a suspected sensor: This suggests a deeper problem, possibly with the wiring or the ABS module itself, which requires specialized diagnostic tools and expertise.

Addressing this promptly is important for your vehicle's safety and reliability. A qualified technician can pinpoint the exact cause using advanced diagnostic equipment and ensure the correct repair.

Menu

Help & account