when I press the gas pedal and start to move at about from 5-10 miles an ahour I

Sounds like a transmission but of course anyone would have to drive the car and experience the problem first hand to be able to say for sure. Have you changed the transmission oil and filter recently? m Perhaps add a product called LUBEGAURD I find it pretty good.

Sounds like the transmission pressure is at maximum. The computer is programmed to send the pressure to maximum when it detects a malfunction with the transmission electrical system, or when it detects a slipage.