[orange4boy]

PWM = pulse width modulated? Does this mean it's a variable voltage solenoid? I always thought solenoids are on/off

If so you would need to know the operating voltage range and if it's within the 12 area then you could probably just give it full voltage so it's fully on thus least slippage. BUT i'm assuming a lot here. You would need to fully understand how all this works.

I imagine it slips a bit under high torque. It is in an oil bath after all. I doubt it slips "all the time"

I think dealerships and politicians are about equal in terms of "reliable source" material.

Have you tried an Olds forum?

By the way: It would be better if you kept all this under one thread so you can find it later, we who are trying to help can find you and others who are following can find the info. Thx.