2004 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Engine Controls Connector End Views

Accelerator Pedal Position (APP) Sensor Terminal Identification

GM366097Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15318071
  • 10-Way F Metri-Pack 150 Series (GY)
Pin Wire Color Circuit No. Function
A - - Not Used
B PU 1272 5 Volt Reference
C L-BU 1162 APP Sensor 2 Signal
D TN 1274 Low Reference
E BN 1271 Low Reference
F D-BU 1161 APP Sensor 1 Signal
G WH/BK 1164 5 Volt Reference
H-K - - Not Used
Camshaft Position (CMP) Sensor Terminal Identification

GM516611Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12059595
  • 3-Way F Metri-Pack 150 Series Sealed (BK)
Pin Wire Color Circuit No. Function
A BN/WH 633 CMP Sensor Signal
B PK/BK 632 Low Reference
C RD 631 12 Volt Reference
Crankshaft Position (CKP) Sensor Terminal Identification

GM366117Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15324165
  • 3-Way F Metri-Pack 150 Series (WH)
Pin Wire Color Circuit No. Function
A D-BU/WH 1869 CKP Sensor Signal
B YE/BK 1868 Low Reference
C L-GN 1867 12 Volt Reference
Evaporative Emission (EVAP) Canister Purge Solenoid Terminal Identification

GM684795Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12124037
  • 2-Way F Metri-Pack 150 Series Sealed (BK)
Pin Wire Color Circuit No. Function
A PK 439 Ignition 1 Voltage
B D-GN/
WH		 428 EVAP Canister Purge Solenoid Control
Evaporative Emission (EVAP) Canister Vent Solenoid Terminal Identification

GM684795Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052643
  • 2-Way F Metri-Pack 150 Series Sealed (RD)
Pin Wire Color Circuit No. Function
A WH 1310 EVAP Canister Vent Solenoid Control
B OG 2640 Ignition 1 Voltage
Fuel Injector 1 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1039 Ignition 1 Voltage
B BK 1744 Fuel Injector 1 Control
Fuel Injector 2 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1239 Ignition 1 Voltage
B L-GN/BK 1745 Fuel Injector 2 Control
Fuel Injector 3 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1039 Ignition 1 Voltage
B PK/BK 1746 Fuel Injector 3 Control
Fuel Injector 4 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1239 Ignition 1 Voltage
B L-BU/BK 844 Fuel Injector 4 Control
Fuel Injector 5 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1039 Ignition 1 Voltage
B BK/WH 845 Fuel Injector 5 Control
Fuel Injector 6 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1239 Ignition 1 Voltage
B YE/BK 846 Fuel Injector 6 Control
Fuel Injector 7 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1039 Ignition 1 Voltage
B RD/BK 877 Fuel Injector 7 Control
Fuel Injector 8 Terminal Identification

GM366123Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326181
  • 2-Way F (GY)
Pin Wire Color Circuit No. Function
A PK 1239 Ignition 1 Voltage
B D-BU/WH 878 Fuel Injector 8 Control
Fuel Pump and Sender Assembly Terminal Identification

GM684908Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326631
  • 4-Way F GT 280 Sealed 5.8 (BK)
Pin Wire Color Circuit No. Function
A BK 2150 Ground
B PU 1589 Fuel Level Sensor Signal
C BK 470 Low Reference
D GY 120 Fuel Pump Supply Voltage
Fuel Tank Pressure (FTP) Sensor Terminal Identification

GM516611Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12059595
  • 3-Way F Metri-Pack 150 Series Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 470 Low Reference
B D-GN 890 Fuel Tank Pressure Sensor Signal
C GY 474 5 Volt Reference
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Terminal Identification

GM831392Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12092839
  • 4-Way M Metri- Pack 150 Series (BK)
Pin Wire Color Circuit No. Function
A TN 1664 HO2S Low Signal - Bank 1 Sensor 1
B PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
D PK 539 Ignition 1 Voltage
E BK/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Terminal Identification

GM806613Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326423
  • 4-Way M Metri-Pack 150 Sealed (GY)
Pin Wire Color Circuit No. Function
A TN/WH 1669 HO2S Low Signal - Bank 1 Sensor 2
B PU/WH 1668 HO2S High Signal - Bank 1 Sensor 2
C BN 2391 HO2S Heater Low Control - Bank 1 Sensor 2
D PK 1539 Ignition 1 Voltage
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Terminal Identification

GM831392Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12092839
  • 4-Way M Metri- Pack 150 Series (BK)
Pin Wire Color Circuit No. Function
A TN 1667 HO2S Low Signal - Bank 2 Sensor 1
B PU 1666 HO2S High Signal - Bank 2 Sensor 1
D PK 539 Ignition 1 Voltage
E L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Terminal Identification

GM806613Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326423
  • 4-Way M Metri-Pack 150 Sealed (GY)
Pin Wire Color Circuit No. Function
A TN 1671 HO2S Low Signal - Bank 2 Sensor 2
B PU 1670 HO2S High Signal - Bank 2 Sensor 2
C RD/WH 3223 HO2S Heater Low Control - Bank 2 Sensor 2
D PK 1539 Ignition 1 Voltage
Ignition Coil #1 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2129 Low Reference
C PU 2121 IC 1 Control
D PK 1039 Ignition 1 Voltage
Ignition Coil #2 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2130 Low Reference
C RD 2122 IC 2 Control
D PK 1239 Ignition 1 Voltage
Ignition Coil #3 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2129 Low Reference
C L-BU 2123 IC 3 Control
D PK 1039 Ignition 1 Voltage
Ignition Coil #4 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2130 Low Reference
C D-GN 2124 IC 4 Control
D PK 1239 Ignition 1 Voltage
Ignition Coil #5 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2129 Low Reference
C D-GN 2125 IC 5 Control
D PK 1039 Ignition 1 Voltage
Ignition Coil #6 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2130 Low Reference
C L-BU 2126 IC 6 Control
D PK 1239 Ignition 1 Voltage
Ignition Coil #7 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2129 Low Reference
C RD 2127 IC 7 Control
D PK 1039 Ignition 1 Voltage
Ignition Coil #8 Terminal Identification

GM280765Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162724
  • 4-Way F Metri-Pack 150 Sealed (BK)
Pin Wire Color Circuit No. Function
A BK 550 Ground
B BN 2130 Low Reference
C PU 2128 IC 8 Control
D PK 1239 Ignition 1 Voltage
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Terminal Identification

GM366067Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15305555
  • 5-Way F Metri-Pack 150 Series (BK)
Pin Wire Color Circuit No. Function
A BK 552 Low Reference
B TN 472 IAT Sensor Signal
C BK/WH 451 Ground
D PK 439 Ignition 1 Voltage
E YE 492 MAF Sensor Signal
Knock Sensor Terminal Identification - Front

GM35416Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12103023
  • 1-Way TRW (M-GY)
Pin Wire Color Circuit No. Function
A D-BU 496 Knock Sensor 1 Signal
Knock Sensor Terminal Identification - Rear

GM35416Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12103023
  • 1-Way TRW (M-GY)
Pin Wire Color Circuit No. Function
A L-BU 1876 Knock Sensor 2 Signal
Manifold Absolute Pressure (MAP) Sensor Terminal Identification

GM684840Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12129946
  • 3-Way F Metri-Pack 150 Series Sealed (M-GY)
Pin Wire Color Circuit No. Function
A OG/BK 469 Low Reference
B L-GN 432 MAP Sensor Signal
C GY 597 5 Volt Reference
Throttle Actuator Control (TAC) Assembly Terminal Identification

GM831368Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326836
  • 8-Way F GT 150 SLD (BK)
Pin Wire Color Circuit No. Function
A YE 581 TAC Motor Control - 1
B OG/BK 1057 Low Reference
C BN 582 TAC Motor Control - 2
D BK 452 Low Reference
E L-BU/
BK		 1688 5 Volt Reference
F PU 486 TP Sensor 2 Signal
G D-GN 485 TP Sensor 1 Signal
H GY 416 5 Volt Reference
Throttle Actuator Control (TAC) Module C1 Terminal Identification

GM261930Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12191065
  • 16-Way F Micro-Pack 100 Series (M-GY)
Pin Wire Color Circuit No. Function
1 D-GN 485 TP Sensor 1 Signal
2 GY 416 5 Volt Reference
3 BK 452 Low Reference
4 D-BU 84 Cruise Control Set/Coast Switch Signal
5 GY/BK 87 Cruise Control Resume/Accel Switch Signal
6 L-BU 1320 Stop Lamp Supply Voltage
7 PK 1339 Ignition 1 Voltage
8 BN 582 TAC Motor Control - 2
9 L-BU/
BK		 1688 5 Volt Reference
10 OG/BK 1057 Low Reference
11 PU 486 TP Sensor 2 Signal
12 OG/BK 1061 UART Serial Data-Secondary
13 D-BU/
WH		 774 UART Serial Data-Tertiary
14 GY 397 Cruise Control On Switch Signal
15 BK 550 Ground
16 YE 581 TAC Motor Control - 1
Throttle Actuator Control (TAC) Module C2 Terminal Identification

GM666638Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12177081
  • 10-Way F 150 Series Sealed (BK)
Pin Wire Color Circuit No. Function
A - - Not Used
B PU 1272 5 Volt Reference
C L-BU 1162 APP Sensor 2 Signal
D TN 1274 Low Reference
E - - Not Used
F D-BU 1161 APP Sensor 1 Signal
G WH/BK 1164 5 Volt Reference
H - - Not Used
J BN 1271 Low Reference
K - - Not Used
Vehicle Speed Sensor (VSS) Terminal Identification

GM666646Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15336024
  • 2-Way F GT 150 Sealed (BK)
Pin Wire Color Circuit No. Function
1 PU/WH 821 VSS High Signal
2 L-GN/BK 822 VSS Low Signal
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.