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Home >> Chevrolet >> 2007 >> Silverado Classic 1500 HD, 4WD >> Repair and Diagnosis >> Quick Lookups >> Wiring Diagrams >> OEM Connector End Views - Engine Control Module, Engine Controls, Engine Electrical >> Engine Electrical Connector End Views >> Starter/Generator Control Module SGCM Connector End View C4 (HP2)
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Starter/Generator Control Module SGCM Connector End View C4 (HP2)

Fig 1: Starter/Generator Control Module (SGCM) C4 Connector End View (HP2)
GM39784Courtesy of GENERAL MOTORS CORP.
Starter/Generator Control Module (SGCM) C4 Connector Part Information (HP2)

Connector Part Information 
  • OEM: 12129225
  • Service: See Catalog
  • Description: 24-Way F Micro-Pack 100 Series Sealed (WH)
Terminal Part Information 
  • Terminal/Tray: 12084913/5
  • Core/Insulation Crimp: W/W
  • Release Tool/Test Probe: 12122523/J-35616-6 (BN)
  • Pins: 12
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
Starter/Generator Control Module (SGCM) C4 Connector Terminal Identification (HP2)

Pin Wire Color Circuit No. Function
1 TN/WH 2500 High Speed GMLAN Serial Data (+)
2 TN/WH 2500 High Speed GMLAN Serial Data (+)
3-6 - - Not Used
7 YE/BK 625 Starter Enable Relay Control
8 PK 1020 Ignition 0 Voltage
9 L-BU/BK 647 Medium Resolution Engine Speed Signal
10-11 - - Not Used
12 WH 2368 Cooling Fan Clutch Supply Voltage
13 TN 2501 High Speed GMLAN Serial Data (-)
14 TN 2501 High Speed GMLAN Serial Data (-)
15-20 - - Not Used
21 WH 121 Engine Speed Signal
22-23 - - Not Used
24 PK 2014 Coolant Pump Relay Control
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