The memory function is on the drivers seat so it has extra wires probably from controller and wires for manual operation (switch). You have two wires to each motor. Determine if one of those is ground or the motor is grounded thru metal seat. If one is ground then see Leitmotif's explanation. Wire the drivers seat just like the pass with same colors and leave off the extra wires. You say 4 motors on pass seat and 2 wires each motor..that's 8 wires., you say 7. SO we don't know much from your explanations because you are still not careful about describing. You have to say motor 1: no of wires and color, motor 2: no of wires and color and so on and then say where each wire goes, thru a connector (plug as you say) and so on. Draw yourself a wiring diagram of the whole deal and you will find that it's easier to see what's going on. Don't say plug, say connector. Each connector has a plug and receptacle halves correct? Male and female. More than a Volt Ohm Meter you need a diagram for that vehicle. Find a Chevy site for newer Envoy/Trailblazers and ask them to post the seat wiring info.
