GMC Savana G2500 (1996-2013) brake pressure differential switch Wiring diagrams

15-77 CM FROM 6-PIN CONNECTOR ON RIGHT FRAME RAIL) 4.3L 4.3L, GVW OVER 8500 LBS., FEDERAL EMISSIONS 5.0/ 5.7L 5.0L, 5.7L, 7.4L 7.4L 7.4L ONLY 7.4L OTHERS 7.4L-ENGINE HARNESS, APPROX 14 CM FROM FUEL INJECTOR BREAKOUT) 7.4L/ 4.3L SECONDARY AIR INJECTION REACTION (AIR) PUMP CLUTCH (7.4L ONLY) A/C COMPRESSOR CLUTCH A/C LOW PRESSURE CUTOUT SWITCH FUEL PUMP AND SENDER BANK 1 SENSOR 1 BANK 1 SENSOR 3 (EX 7.4L) BANK 1 SENSOR 2 BANK 2 SENSOR 1 DIODE BANK 2 SENSOR 2 (7.4L) BASE BLK WIRE BLK/WHT WIRE BLOWER MOTOR RESISTOR/ RELAY BRAKE PRESSURE DIFFERENTIAL SWITCH CRUISE CONTROL MODULE DATA LINK CONNECTOR (DLC) ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 7.4L EXCEPT 7.4L-ENGINE HARNESS, 4-16 CM FROM FUEL INJECTOR BREAKOUT) FUEL PUMP RELAY GASOLINE ENGINES HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR UNDERHOOD FUSE/RELAY CENTER HORNS IGNITION CONTROL MODULE (ICM) INFLATABLE RESTRAINT FRONT END DISCRIMINATING SENSOR INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE INSTRUMENT CLUSTER PASSLOCK MODULE LAMP GROUP LEFT FRONT DOOR JAMB SWITCH LEFT FRONT POWER DOOR LOCK SWITCH LEFT FRONT POWER SIDE WINDOW SWITCH LEFT POWER OUTSIDE REAR VIEW MIRROR MASS AIRFLOW (MAF) SENSOR NCA WIRE NON- BASE OTHERS OTHERS 7.4L OTHERS EXCEPT 7.4L PARK/ NEUTRAL POSITION SWITCH POWER OUTSIDE REAR VIEW MIRROR REMOTE CONTROL SWITCH RIGHT FRONT DOOR JAMB SWITCH RIGHT FRONT POWER DOOR LOCK SWITCH RIGHT FRONT POWER SIDE WINDOW SWITCH RIGHT POWER OUTSIDE REAR VIEW MIRROR STARTER RELAY TAN/WHT WIRE UNDERHOOD FUSE/RELAY CENTER UNDERHOOD FUSE/RELAY CENTER A/C LOW PRESSURE CUTOUT SWITCH UNDERHOOD REEL LAMP UNDERHOOD LAMP VEHICLE CONTROL MODULE (VCM)

A/C COMPRESSOR CLUTCH AMBULANCE PACKAGE AUXILIARY BLOWER MOTOR AUXILIARY BLOWER MOTOR CENTER HIGH MOUNTED STOPLAMP BLK WIRE BLK/WHT WIRE BLOWER MOTOR RESISTOR/ RELAY BRAKE PRESSURE DIFFERENTIAL SWITCH CENTER HIGH MOUNTED STOPLAMP DATA LINK CONNECTOR (DLC) DIESEL ENGINES DIODE ELECTRONIC BRAKE CONTROL MODULE (EBCM) FRONT AUXILIARY HVAC CONTROL MODULE HEATER AND A/C CONTROL LOGIC MODULE FUEL HEATER FUEL LIFT PUMP FUEL PUMP RELAY FUEL SENDER BUFFER MODULE GLOW PLUG RELAY HORNS INSTRUMENT CLUSTER LAMP GROUP LEFT REAR PARK/ STOP LAMP LEFT REAR PARK/ TURN LAMP LEFT BACKUP LAMP NCA WIRE PARK/ NEUTRAL POSITION SWITCH PASSENGER VANS ONLY PASSLOCK MODULE (BLUNT CUT) POWERTRAIN CONTROL MODULE (PCM) REAR AUXILIARY HVAC CONTROL MODULE AUXILIARY BLOWER MOTOR SWITCH RIGHT BACKUP LAMP LICENSE LAMP RIGHT POWER SEAT SWITCH RIGHT REAR DOOR JAMB SWITCH SIDE DOOR JAMB SWITCH RIGHT REAR PARK/ TURN LAMP RIGHT REAR PARK/ STOP LAMP SIDE DOOR JAMB SWITCH STARTER RELAY TAN/WHT WIRE UNDERHOOD FUSE/RELAY CENTER UNDERHOOD LAMP UNDERHOOD REEL LAMP VEHICLE SPEED SENSOR BUFFER W/ AUXILIARY HEAT ONLY W/ AUXILIARY HEAT, A/C W/ POWER PASSENGER SEAT W/O POWER PASSENGER SEAT WATER IN FUEL INDICATOR

19 15 16 ALARM ENABLE SIG HAZARD SW LEFT SIG HAZARD SW RIGHT SIG 2 59 28 60 SERIAL DATA LH SEAT BELT SW LOW REF RH SEAT BELT SW 8 17 PARK LAMP SIGNAL HEADLAMP SW OFF SIG AIR BAG FUSE AUTO OFF 3 8 BATTERY BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE DIFFERENTIAL SWITCH CHIME MODULE (W/O RADIO) (BEHIND LEFT CENTER OF DASH) COMPUTER DATA LINES SYSTEM CONNECTOR BREAKOUT) DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH FUSE GROUND GRY WIRE GRY/BLK WIRE HAZARD SWITCH HAZARD WARNING SWITCH HEAD PARK HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES IGN SW IGNITION KEY SWITCH IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR JAMB SWITCH (W/ LEFT REAR HINGED DOOR) (AT LEFT "B" PILLAR) LEFT TURN LIGHT PPL DUTY LOGIC LT BLU WIRE LT BLU/BLK WIRE OFF ORG/ WIRE PARK BRAKE SWITCH PARK BRK SW SIG PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PASSENGER SEAT BELT BUCKLE (W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER) PASSENGER SEAT BELT SWITCH PNK IGN VOLT WIRE PNK PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PPL PPL HEAVY DUTY PPL PNK WIRE PPL PPL SENS SIG RADIO RDO/CHIME FUSE RED WIRE RED/WHT WIRE RIGHT REAR DOOR JAMB SWITCH (CARGO/ PASSENGER) (AT RIGHT "B" PILLAR) RIGHT TURN RUN WIRE SEAT BELT IND LOW OIL PRESSURE IND TIRE PRESSURE IND SERIAL DATA SPLICE BLOCK TAN WIRE TAN/WHT WIRE W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ MANUAL SUPPRESSION SWITCH W/O MANUAL SUPPRESSION SWITCH, RV UPFITTER WHT WIRE YEL WIRE YEL/BLK WIRE