I just noticed this yesterday when I took the seats out to put the heat wiring in. The controls for the passenger side power seat are backwards! Thus, when you want to move the seat forward and back, you have to push the button up and down.. and vise versa.

I have no idea how this could happen. The wiring for them has a connector that plugs into the main harness, so wires would have to be pulled out of the connectors to change something like that.

Bad switch?

It was not like this before the seats were upholstered.

There may also be wiring reversed at the fwd/rev motor. Since they are DC motors, it sounds to me like a polarity reversal. All GM connectors are keyed so unless something was forced, this would be difficult. Cross reference the connector wire colors against your FSM just in case something came apart during the upholstery work and wasn't reassembled correctly.

Maybe I can offer a better, if not more reasonable, scenerio.

The switches themselves have been transposed. Makes sense...since the upholsterer would have to take the swtichplate and switches out to reskin.

the switch plate is one big unit, there would be no reason for him to take it apart. you know how hard it is to take apart GM switches...

...yeah, it'* just about as hard to mismatch the keyed connectors.

I'm at a loss then...

If you are thinking transposing the left seat switch and right seat switch "complete assembly", then the driver seat as well as the seat cushion up/down controls would be affected.

If they broke the seat switch during re-upholstery and replaced it with a left instead of right you may possibly see this. At the same time however, the seat cushion up/down control should be wrong as well. Haro, was the seat cushion function normal?

EDIT: Grammar

Okay, just got to a computer where I could watch the video... Standby and I'll have a look at my car. Something is really fishy here.

Fixed! Thanks for the call Darcy, you're a friggin genius.

The connectors on the motors are different colors and have slightly different tabs, but they still plug into eachother. I swapped the connectors without removing the seat, and presto, works correctly now

Hey, glad I could help.