Awd circuit for Chevrolet Uplander I (2004-2008)

15 24 SERIAL DATA PCM RLY ALL WHEEL DRIVE DISABLED AXLE ACT BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DIFFERENTIAL CLUTCH PUMP ACTUATOR CHECK VALVE DK GRN WIRE EMIS/ AWD FUSE 22 GROUND GRY WIRE HOT AT ALL TIMES IGNITION 1 INSTRUMENT PANEL CLUSTER LOGIC LT BLU WIRE MESSAGE CENTER PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF ENGINE COMPT, IN AIR CLEANER ASSEMBLY) PWR/ TRN RELAY SERIAL DATA UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEEL WELL)