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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2009 (WIRING SYSTEMS AND POWER MANAGEMENT - INLINE HARNESS CONNECTOR END VIEWS - X100 THROUGH X275)INLINE HARNESS CONNECTOR END VIEWSX123 BRAKE/CLUTCH HARNESS TO CHASSIS HARNESS (JL1)
2006 Chevrolet Suburban C1500, 5.3 Z

X123 Brake/Clutch Harness to Chassis Harness (JL1)

2006 Chevrolet Suburban C1500, 5.3 ZSECTION X123 Brake/Clutch Harness to Chassis Harness (JL1)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
GM646400
GM684916
Connector Part Information
  • Harness Type: Brake/Clutch
  • OEM Connector: 15326835
  • Service Connector: 88986255
  • Description: 8-Way F GT 150 Series Sealed (BK)
 Connector Part Information
  • Harness Type: Chassis
  • OEM Connector: 15326840
  • Service Connector: 15326840
  • Description: 8-Way M GT 150 Sealed 4.0 (BK)
Terminal Part Information
  • Terminated Lead: 13327112
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/1
 Terminal Part Information
  • Terminated Lead: 13575397
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-3 (GY)
  • Terminal/Tray: 15326269/19
  • Core/Insulation Crimp: E/4
X123 Brake/Clutch Harness to Chassis Harness (JL1)

Pin Wire Circuit Function Pin Wire Circuit Function
A 0.35 TN 7631 Low Reference A 0.5 TN 7631 Low Reference
B 0.35 L-GN/BK 7633 Integrated Trailer Brake Controller User Gain Signal B 0.5 L-GN/BK 7633 Integrated Trailer Brake Controller User Gain Signal
C 0.35 YE 7635 Integrated Trailer Brake Controller Manual Apply Signal C 0.5 YE 7635 Integrated Trailer Brake Controller Manual Apply Signal
D 0.35 D-BU 7632 5-Volt Reference D 0.5 D-BU 7632 5-Volt Reference
E 0.35 BN 7634 Integrated Trailer Brake Controller Redundant Manual Apply Signal E 0.5 BN 7634 Integrated Trailer Brake Controller Redundant Manual Apply Signal
F - - Not Used F - - Not Used
G 0.35 L-BU/WH 6311 TCC Brake Signal G 0.5 L-BU/WH 6311 TCC Brake Signal
H 0.35 PK 239 Ignition Voltage H 0.5 PK 239 Ignition Voltage
RENDER: 1.0x

NO RELATED

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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.