07 Yukon surging at highway speeds

[Chrismartin23]

I've been having a problem with my 07 Yukon surging at highway speeds. It's not throwing any codes and a few local shops are clueless. It has the 5.3 with around 150000miles. Just wondering if anyone has had any experience with this?

 

[Christoph559]

I think I've been dealing with the same surge, it went awhile for a little after I had that trans filter change but is back now. Seems like anything above 45 with steady speed the rpm's go up and down a few hundred