Chevrolet Chevy Express G2500 (1996-2012) 4.3l vin w, heater circuit

AIR TEMPERATURE ACTUATOR (UNDER DASH, RIGHT SIDE OF HVAC PLENUM) AUXILIARY BLOWER MOTOR (IF EQUIPPED) (LEFT REAR OF CABIN, BEHIND REAR WHEELWELL) AUXILIARY BLOWER MOTOR SWITCH (IF EQUIPPED) BLK WIRE BLOWER FUSE BLOWER MOTOR (RIGHT REAR OF ENGINE COMPT) BRN WIRE CONVENIENCE CENTER DK BLU WIRE GRY WIRE HEAT BLEND DEF HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HTR A/C FUSE 12 HVAC CONTROL ASSEMBLY I/P FUSE BLOCK (LOWER LEFT KICK PANEL) LT BLU WIRE MED LO OFF OFF VENT ORG/ WIRE PPL RED WIRE RR BLOWER FUSE RR HVAC FUSE 24 TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE