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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 734 (INSTRUMENT PANEL SYSTEM DISPLAYS, GAUGES AND CONSOLE)COMPONENT LOCATORINSTRUMENT PANEL, GAGES, AND CONSOLE CONNECTOR END VIEWS
1999 GMC Forward Control 5.7 R, Automatic

Instrument Panel, Gages, and Console Connector End Views

1999 GMC Forward Control 5.7 R, AutomaticSECTION Instrument Panel, Gages, and Console Connector End Views
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Instrument Panel Cluster (IPC) Terminal Identification

GM62478Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12065803
  • 34-Way F Micro-Pack 100 Series (BLK)
Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 LT GRN 11 Headlamp High Beam Supply Voltage
A3 WHT 103 Headlamp Switch Headlamps On Signal
A4 BLK/WHT 99 Windshield Washer Fluid Level Signal
A5 - - Not Used
A6 TAN/WHT 33 Brake Warning Indicator Control
A7 DK GRN/WHT 817 Vehicle Speed Signal
A8 BLK 150 Ground
A9 - - Not Used
A10 DK GRN/WHT 357 Oil Temperature Sensor Signal
A11 GRY 1036 IPC Class 2 Serial Data
A12 - - Not Used
A13 PNK 139 Ignition 1 Voltage
A14 ORN 1640 Battery Positive Voltage
A15 LT BLU 14 Left Turn Signal Status Signal
A16 DK BLU 15 Right Turn Signal Status Signal
A17 WHT 121 Engine Speed Signal
B1 - - Not Used
B2 BLK/WHT 238 Seat Belt Switch Signal - Driver
B3 - - Not Used
B4 PPL 333 Brake Fluid Level Sensor Signal
B5 WHT 717 Illuminated Display Signal
B6 GRY/BLK 1458 Instrument Panel Lamp Supply Voltage - 4
B7 - - Not Used
B8 BLK 470 Low Reference
B9-B10 - - Not Used
B11 WHT 375 Skip Shift Indicator Control
B12 - - Not Used
B13 BLK/WHT 851 Ground
B14 - - Not Used
B15 BLK 150 Ground
B16 BRN/WHT 419 MIL Control
B17 BRN 9 Park Lamp Supply Voltage
Engine Oil Temperature (EOT) Sensor Terminal Identification

GM232831Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162192
  • 2-Way F Metri-Pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
A BLK 470 Low Reference
B DK GRN/WHT 357 Oil Temperature Sensor Signal
Engine Oil Level Switch Terminal Identification

GM35437Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052635
  • 2-Way F Metri-Pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A
-		 BRN 1174 Engine Oil Level Sensor - Signal
B BLK 150 Ground
Engine Oil Pressure (EOP) Sensor Terminal Identification

GM258299Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12065286
  • 3-Way F Metri-Pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A BLK 452 Low Reference
B GRY 596 5 Volt Reference
C TAN/WHT 331 Engine Oil Pressure (EOP) Sensor - Signal
Fuel Level Sensor Terminal Identification - Right (W/O FFS)

GM38608Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162187
  • 4-Way F Metri-Pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
A - - Not Used
B GRY 720 Low Reference
C LT BLU 1937 Right Fuel Level Sensor - Signal
D BLK 150 Ground
Fuel Level Sensor Terminal Identification - Right (W/ FFS)

GM697003Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15324862
  • 4-Way F Metri-Pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
1 LT BLU 1937 Fuel Level Sensor Signal
2 - - Not Used
3 BLK/WHT 850 Ground
4 BLK 808 Low Reference
Fuel Pump And Sender Assembly Terminal Identification (W/O Ffs)

GM38608Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162187
  • 4-Way F Metri-Pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
A GRY 120 Fuel Pump Supply Voltage
B GRY 720 Low Reference
C DK BLU 1936 Fuel Level Sensor Signal - Secondary
D BLK 150 Ground
Fuel Pump And Sender Assembly Terminal Identification (W/ FFS)

GM697003Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15324862
  • 4-Way F Metri-Pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
1 DK BLU 1936 Fuel Level Sensor Signal - Secondary
2 GRY 120 Fuel Pump Supply Voltage
3 BLK 9531 Ground
4 BLK 808 Low Reference
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.