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2022 CT5-V Blackwing - Reduced Power and Whining Noise

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Mark S. · rep 0 · May 22, 3:56 AM · 1 replies · solved · Question

Hey everyone, I'm having a weird issue with my 2022 Cadillac CT5-V Blackwing. Lately, I've noticed a significant reduction in power, almost like the turbos aren't spooling up correctly. It feels sluggish, especially when accelerating hard.

On top of that, there's a distinct whining noise coming from the engine bay, which wasn't there before. It seems to get louder under load. The check engine light came on yesterday, and I'm a bit worried.

Has anyone experienced anything similar with their Blackwing or other Cadillac turbo models? What could be causing this? I'm hoping it's not something major.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:56 AM

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ClearTheCode guidance (Cadillac · Engine & drivetrain)

Summary: For 2022 CT5-V Blackwing - Reduced Power and Whining Noise, work through these steps on your 2016+ vehicle:

  1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
  2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
  3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
  4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
  5. Test the common fix — follow model-specific service procedures; one change at a time.
  6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: Hey everyone, I'm having a weird issue with my 2022 Cadillac CT5-V Blackwing. Lately, I've noticed a significant reduction in power, almost like the turbos aren't spooling up correctly. It feels sluggish, especially when accelerating hard.

On top of that, there's a distinct whining noise coming from the engine bay, which wasn't there before. It seems to get louder under load. The check engine lig…

This is educational guidance, not a substitute for hands-on diagnosis.

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