LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2005 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Computer/Integrating Systems) >> Component Locator >> Computer/Integrating Systems Connector End Views
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Computer/Integrating Systems Connector End Views

WARNING: This page is about a different car, the 2005 GMC Sierra and 2005 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) - C1

GM40446Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12177194
  • 6-Way F Metri-Pack 150 Series (NA)
Pin Wire Color Circuit No. Function
A RD 2353 Instrument Panel Lamps Dimming Supply Voltage
B PU/WH 1382 LED Dimming Signal
C OG 4040 Battery Positive Voltage
D OG 1732 Inadvertent Power Courtesy Lamps Supply Voltage
E BN/WH 230 Instrument Panel Lamps Dimming Control
F OG 2240 Battery Positive Voltage
Body Control Module (BCM) - C2

GM73156Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110088
  • 24-Way F Micro-Pack 100 Series (GY)
Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 D- BU 1796 Steering Wheel Radio Controls Supply Voltage (UK3)
A3 D-BU 245 Passenger Door Lock Switch Unlock Control - Base
TN/BK 254 Rear Door Unlock Relay Control - Uplevel
A4 PK/WH 1970 Headlamp Low Beam Relay Control
A5 D-GN/WH 1317 Fog Lamp Relay Control
A6 L-BU 244 Passenger Door Lock Switch Lock Control - Base
GY/BK 255 Rear Door Lock Relay Control - Uplevel
A7 - - Not Used - Uplevel
L-GN 1391 Driver Door Unlock Relay Control - Base
A8 WH 193 Rear Defog Relay Control
A9-A10 - - Not Used
A11 RD/WH 812 12 Volt Reference
A12 OG 1140 Battery Positive Voltage
B1 BK/WH 1969 Headlamp High Beam Relay Control
B2 WH 1080 Park Lamp Relay Control
B3 D-BU 1353 RAP Supply Voltage
B4 L-GN/BK 592 DRL Relay Control
B5 PU 359 DRL Off Indicator Control
B6 BK/WH 1851 Ground
B7 BK 1835 Security System Sensor Low Reference
B8 PK 1348 Headlamp On Indicator Control
B9 BK 28 Horn Relay Control
B10 - - Not Used
B11 GY 1056 Dimming Potentiometer 5-Volt Reference
B12 L-GN 1037 BCM Class 2 Serial Data
Body Control Module (BCM) - C3

GM255037Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12160778
  • 24-Way F Micro-Pack 100 Series (BN)
Pin Wire Color Circuit No. Function
A1-A3 - - Not Used
A4 WH 278 Ambient Light Sensor Signal
A5 - - Not Used - w/o CJ2
GY 1548 Passenger Sunload Sensor Signal - CJ2
A6 YE 1836 Security System Sensor Signal
A7 - - Not Used - Base
L-GN 1011 Remote Radio Control Signal (UK3)
A8 D-GN 588 DRL Switch Signal
A9 OG 192 Front Fog Lamp Switch Signal
A10 - - Not Used
A11 PU 328 Interior Lamp Defeat Switch Signal
A12 - - Not Used
B1 - - Not Used
B2 GY/BK 308 Park Lamp Switch Signal
B3-B4 - - Not Used
B5 - - Not Used - w/o CJ2
L-BU/BK 590 Driver Sunload Sensor Signal - CJ2
B6 BK/WH 1851 Ground
B7 - - Not Used
L-BU 1059 Steering Wheel Position Sensor Signal - NYS
B8 OG/BK 2090 Dimming Switch Signal
B9 L-GN 11 Headlamp Dimmer Switch Signal
B10 - - Not Used
B11 L-BU 553 Tow/Haul Switch Signal
B12 - - Not Used
Body Control Module (BCM) - C4

GM130690Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110206
  • 24-Way F Micro-Pack 100 Series (L-BU)
Pin Wire Color Circuit No. Function
A1 L-GN 80 Key In Ignition Switch Signal
A2 YE 307 Headlamp Switch Flash to Pass Signal
A3 WH 530 Off/Run/Crank Voltage
A4 PK 39 Ignition 1 Voltage
A5 - - Not Used - Uplevel
BK/WH 746 Right Front Door Ajar Switch Signal - Base
A6 D-BU/WH 149 Cargo Lamp Low Control
A7 L-BU 1134 Park Brake Switch Signal
A8 GY 1524 Backup Lamp Signal
A9-A11 - - Not Used
A12 WH 103 Headlamp Switch Headlamps On Signal
B1-B2 - - Not Used
B3 YE 43 Accessory Voltage
B4 - - Not Used - Uplevel
GY/BK 745 Left Front Door Ajar Switch Signal - Base
B5 - - Not Used - Uplevel
L-BU 195 Door Lock Control - Base
B6 GY/BK 2226 Instrument Panel Lamps Dimmer Switch Low Reference
B7 BK 279 Ambient Light Sensor Low Reference
B8 - - Not Used
B9 D-BU/WH 1495 Courtesy Lamps On Signal
B10 - - Not Used - Uplevel
WH 194 Door Unlock Control - Base
B11-B12 - - Not Used
Body Control Module (BCM) - C5

GM304345Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12177195
  • 6-Way F Metri-Pack 150 Series (BK)
Pin Wire Color Circuit No. Function
A-C - - Not Used
D OG 2140 Battery Positive Voltage
E GY/BK 690 Courtesy Lamp Control
F L-GN 24 Backup Lamp Supply Voltage
Body Control Module (BCM) - C6

GM362758Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12191375
  • 16-Way F Micro-Pack 100 Series (PU)
Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 L-GN/BK 748 Right Rear Door Ajar Switch Signal
A3 L-BU/BK 747 Left Rear Door Ajar Switch Signal
A4 - - Not Used
A5 - - Not Used - Base
L-BU 2265 Power Window Lockout Left Rear Control - Uplevel
A6 - - Not Used - Base
L-GN 2266 Power Window Lockout Right Rear Control - Uplevel
A7 - - Not Used - Base
GY/BK 1186 Power Window Relay Right Rear Up Control - Uplevel
A8 - - Not Used - Base
D-GN 1188 Power Window Relay Right Rear Down Control - Uplevel
B1-B6 - - Not Used
B7 - - Not Used - Base
YE 1187 Power Window Relay Left Rear Down Control - Uplevel
B8 - - Not Used - Base
WH 1185 Power Window Relay Left Rear Up Control - Uplevel
Data Link Connector (DLC)

GM68793Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110250
  • 16-Way F Metri-Pack 150 Series (BK)
Pin Wire Color Circuit No. Function
1 - - Not Used
2 PU 1132 DLC Class 2 Serial Data
3 - - Not Used
4 BK 1050 Ground
5 BK/WH 1851 Ground
6 - - Not Used - w/o HP2
TN/WH 2500 High Speed GM LAN Serial Data (+) - HP2
7-13 - - Not Used
14 - - Not Used - w/o HP2
TN 2501 High Speed GM LAN Serial Data (-) - HP2
15 - - Not Used
16 OG 640 Battery Positive Voltage
Splice Pack - SP205

GM831366Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15305291
  • 12-Way F Metri-Pack 280 Splice Saver DBL (BK)
Pin Wire Color Circuit No. Function
A OG 1044 Radio Class 2 Serial Data
PK 1045 Serial Communications Circuit
B D-GN 1049 PCM/ECM Class 2 Serial Data
C D-GN/WH 1133 ATC Class 2 Serial Data (NP1/NP8)
L-BU 1122 ABS Class 2 Serial Data
D PU 1132 DLC Class 2 Serial Data
E WH 1038 HVAC Class 2 Serial Data
F TN 1047 PDM Class 2 Serial Data
G GY 1036 IPC Class 2 Serial Data
H D-BU/WH 2218 Serial Communications Circuit
J GY 2567 Rear Wheel Steering Control Module Class 2 Serial Data - NYS
K YE 2470 Allison Class 2 Serial Data - M74
OG/BK 6752 Generator Battery Control Module Class 2 Serial Data - Except 8.1L and HP2
PU/WH 5687 Class 2 Serial Data - HP2
L BN 1046 DDM Class 2 Serial Data
M L-GN 1037 BCM Class 2 Serial Data
Splice Pack - SP207 (w/o Y91)

GM338576Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12176461
  • 12-Way F Metri-Pack 150 Series (BK)
Pin Wire Color Circuit Number Function
A - - Not Used
B PK 1045 RFA Class 2 Serial Data
C YE 1127 Trip Computer/Navigation Class 2 Serial Data - UE1
D-F - - Not Used
G L-BU 2288 LGM Class 2 Serial Data - UK6
H L-GN/BK 1098 VCM (Vehicle Communication) Class 2 Serial Data - U42
J - - Not Used
K L-GN 2271 ADG Class 2 Serial Data - U2K
L-M - - Not Used
Splice Pack - SP207 (Y91)

GM338576Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12176461
  • 12-Way F Metri-Pack 150 Series (BK)
Pin Wire Color Circuit Number Function
A - - Not Used
B PK 1045 RFA Class 2 Serial Data
C YE 1127 Trip Computer/Navigation Class 2 Serial Data
D TN 5072 Remote Playback Device Class 2 Serial Data - U1S
E - - Not Used
F D-BU 2272 Amplifier Class 2 Serial Data
G L-BU 2288 LGM Class 2 Serial Data
H L-GN/BK 1098 VCM (Vehicle Communication) Class 2 Serial Data - U42
J - - Not Used
K L-GN 2271 ADG Class 2 Serial Data - U2K
L-M - - Not Used
scientia non olet · About LEMON Manuals