2005 Yukon Blower Motor Control Module Wiring question

[Jeff S]

Hi,
Have an 05 Yukon Xl that had the blower control module die out. Got a new one with the 7 pin harness (mine is wired for the stock 3 pin -but all new units are 7 pin).

It didn't come with a wiring diagram -which 3 wires to use on the new unit.

Does anyone know which 3 wires to connect to?

Old unit is labeled A, B, C on the harness.
New unit is labeled A, B, C, D, E, F, G.

I tried wiring it up matching the above -didn't work. I can't find anything anywhere online and the auto parts store people are about as useful as a bank teller for tech help...

Any help would be appreciated.

Thanks!
Jeff