2018 Cadillac CTS-V — dealer cannot reproduce an intermittent warning

Write down what you already tried. A second data point from another 2018 Cadillac CTS-V owner helps more than a generic diagnosis. That's where I'd start. A shop burned me once by skipping that step. Not trying to scare you — just skip the expensive first guess. If this is nothing, great. I want that in data.

Don't overfit one forum story to your car. If it still isn't clear on the 2018 Cadillac CTS-V, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. No need to make it theatrical. I'm keeping receipts and dates in one folder.

I'd keep this practical. Verify the cheap/easy branch on the 2018 Cadillac CTS-V before a big repair or a big spend. I'd do that before spending real money. When does it actually happen? I'll update if anything new shows up.

I'd keep this practical. Verify the cheap/easy branch on the 2018 Cadillac CTS-V before a big repair or a big spend. That's where I'd start. Not gospel, but it saved me a headache. I've seen both outcomes, which is why I'd test instead of assume. I'll update if anything new shows up.