Hi guys, i have a 08 gmc yukon denali with power steps. when i bought the vehicle they did not work, didnt hear the motors working at all. Dealer said the problem was the module. Long story short i pulled the module out and noticed the red/blk pin was corroded and broke off, i went online and bought a used one and still nothing working. checked for power at the red/blk pin and it reads 12+ volts but nothing still nothing works. BTW i tried the unlock procedure still nothing. ANY HELP WOULD BE GREAT. Does this used mod. need to be programmed?

the plug that it plugs into is likely corroded too and needs cleaned up if what you replaced was

i cleaned the connection and i put my meter on the power and im reading 12+volts

i dont have access to diagrams but there likely is a ground and other thing that need to be good contact to work

it wont even let me get into the module with my scanner, its like to the vehicle the module doesnt even exist. but im getting power to the mod. but nothing out. im wondering if it needs to be programmed somehow because it was used on another vehicle.

in order to have a module that talks to the network you have to have good power, ground, and one or two serial wires from the cars network. is not just a matter of having 12v

i checked the power and ground through the harness and it seems good, because the module is used will it work with my vehicle or are they vin locked or need programming?

Even though your meter shows 12 volts, your meter isnt actually pulling a load on the circuit. Get halogen bulb with alligator clips and check voltage that way. A good bright light will show a good circuit.

wired in new pigtail, all is good

thanks for updating your fix