SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 908 (COMPONENT LOCATIONS - ELECTRICAL CENTER IDENTIFICATION VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSFUSE BLOCK - AUXILIARY X1 (HP2)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Fuse Block - Auxiliary X1 (HP2)

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Fuse Block - Auxiliary X1 (HP2)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Fuse Block - Underhood C1
GM1581655Courtesy of GENERAL MOTORS COMPANY
Fuse Block - Auxiliary X1 (HP2)

Pin Wire Circuit Function
A1 0.35 D-BU 473 High Speed Cooling Fan Relay Control
A2 0.35 PU 5128 Auxiliary Cooling Fan Relay Control
A3 0.5 PK 1839 Ignition Voltage
A4-A8 - - Not Used
B1-B2 - - Not Used
B3 0.8 RD/WH 3340 Battery Positive Voltage
B4 0.8 RD/WH 4640 Battery Positive Voltage
B5 1 RD/WH 4140 Battery Positive Voltage
C1 0.8 PK 2014 Coolant Pump Relay Control
C2 0.5 TN 955 Low Reference
C3 0.5 YE 954 5-Volt Reference
C4-C8 - - Not Used
D1 0.8 OG/WH 7585 Motor Feed
D2-D5 - - Not Used
E1 - - Not Used
E2 5 RD/WH 4040 Battery Positive Voltage
F1-F2 - - Not Used
G1-G4 - - Not Used
G5 0.5 D-GN 942 Generator Control Module Coolant Pump Feed
H1-H2 - - Not Used
H3 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
H4 0.5 PU 5531 Hood Switch Signal
H5-H7 - - Not Used
H8 0.5 D-BU 941 Generator Control Module Coolant Pump Relay Control
J1 0.8 RD/WH 4240 Battery Positive Voltage
0.8 RD/WH 4240 Battery Positive Voltage
J2 0.8 RD/WH 984 5-Volt Reference
J3 0.8 RD/WH 983 Transmission Fluid Pump Control
J4 0.5 RD/WH 40 Battery Positive Voltage
J5 - - Not Used
K1 - - Not Used
K2 0.5 PK/BK 109 Hood Ajar Switch Signal
K3-K8 - - Not Used
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 15477822
  • Service Connector: 19115189
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information
  • Pins: A1-A3, C1-C3, H3, H4, H8, K2
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins A1-A3, C2, C3, H3, H4, H8, K2 - E/C
  • Core/Insulation Crimp: Pins C1 - C/A
  • Pins: B3-B5, D1, G5, J1-J4
  • Terminated Lead: 13575753
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B3-B5, D1, J1-J3 - 2/A
  • Core/Insulation Crimp: Pins G5, J4 - E/A
  • Pins: E2
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote 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.