I'm experiencing intermittent power loss with my 2017 Suburban. When accelerating between 30-40 MPH, the engine suddenly loses power and RPMs drop for about a second before returning to normal. This occurs without any warning lights, check engine codes, or unusual noises. I've taken it to multiple mechanics over the past six months, and despite extensive diagnostics, they've been unable to pinpoint the issue. Their latest recommendation was to take it to the dealer.Does anyone have any suggestions on how to proceed with diagnosing and resolving this problem?

Thanks in advance for your help.
Msquared