auto transmission problem on 2000 Volvo S70

Where is the powertrain control module located?
Will this make the car start out in 2nd Gear all the time?

Asked by for the 2000 Volvo S70
This engine control module could possibly cause it, but it's highly unlikely. For starters, make sure you don't have the transmission in "Winter Mode", that is the "W" button next to the shifter.
Is your upshift arrow flashing and/or the check engine light on?