97 Tahoe. Remanufactured Engine installed May 2003. Transmission has new Valve module same time. Less than 40K miles since install.
Recently noted: While trying to pass, RPM's jump up but speed decreases. If you allow RPM's to come back down, it re-engages. But not to the point of safely passing. Like it has a loss of power. Otherwise operation is normal. Had checked at local transmission shop. Claim no problem with Tranny...it's engine problem.
Could it? What else should I check?