I've read some threads on this but I've never seen an absolute fix. When I'm driving, I get a 2-300 rpm surge occasionally - it's especially noticeable while on cruise control, but I also happens without and while even accelerating. I've already cleaned the TB but this made no difference. I'm taking my truck in for service at the dealer this week and I wanted some other ideas? TPS? IAT sensor?

Thanks!

When you were cleaning the TB, did you also clean the IAC motor next to the TPS?? If that doesn't work you can try replacing the TPS sensor.

output speed sensor on the trans 99 model year had some issues