So I just bought a 2004 GMC Yukon Denali and one of the many little things I need to fix is the front drivers side power seat. All the other power seat functions seem to work except I cannot move the seat forward. I originally thought it might be the switch. If I disconnect the harness for the motor and apply voltage with my power probe the seat does move forward and backwards, so I know the motor works. I tried another switch but it did not make a difference. Any ideas?