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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1926 (COMPONENT LOCATIONS - ELECTRICAL CENTER IDENTIFICATION VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSFUSE BLOCK - UNDERHOOD X2
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Fuse Block - Underhood X2

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Fuse Block - Underhood X2
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Fuse Block - Underhood X2
GM1665660Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X2

Pin Wire Circuit Function
A1 0.35 D-GN 335 Low Speed Cooling Fan Relay Control (Gas except LY6 or HP2)
0.5 WH/BK 2366 Cooling Fan Control Relay Speed Signal (Diesel)
A2-A4 - - Not Used
A5 0.5 RD/WH 4540 Battery Positive Voltage (TP2)
B1-B3 - - Not Used
B4 0.5 OG 300 Ignition 3 Voltage (TP2 or HP2)
B5 0.35 D-BU/WH 473 High Speed Cooling Fan Relay Control (Gas except LY6 or HP2)
C1-C2 - - Not Used
C3 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control (Except HP2)
C4 - - Not Used
C5 0.5 YE/BK 625 Starter Enable Relay Control (Except HP2)
D1-D2 - - Not Used
D3 0.5 RD/WH 440 Battery Positive Voltage
D4 0.8 D-GN 59 A/C Compressor Clutch Supply Voltage (C67 or CJ2 except HP2)
D5 - - Not Used
E1-E3 - - Not Used
F1 3 PU 6 Starter Solenoid Crank Voltage (Except HP2)
G1 - - Not Used
H1 - - Not Used
J1 - - Not Used
K1-K3 - - Not Used
L1 0.5 PK 1839 Ignition 1 Voltage (LMG, LC9, L96 or HP2)
0.5 PK 1839 Ignition 1 Voltage (HP2)
L2 0.5 PK/BK 1539 Ignition 1 Voltage (Gas)
0.5 PK/BK 1539 Ignition 1 Voltage (Gas)
L3 0.8 PK/WH 1239 Ignition 1 Voltage (Gas except LU3)
0.8 PK/WH 1239 Ignition 1 Voltage (Gas except LU3)
0.5 PK 2339 Ignition 1 Voltage (Diesel)
L4 0.5 PK 539 Ignition 1 Voltage (Gas)
0.5 PK 539 Ignition 1 Voltage (Gas)
2 PK/BK 1439 Ignition 1 Voltage (Diesel)
L5 1 PK 1039 Ignition 1 Voltage (Gas)
0.5 PK 1339 Ignition 1 Voltage (Diesel)
M1 0.5 PK 1839 Ignition 1 Voltage (Gas)
0.5 PK 1839 Ignition 1 Voltage (Gas except LU3)
M2 1 PK 1239 Ignition 1 Voltage (Gas except LU3)
0.5 PK 1839 Ignition 1 Voltage (Diesel)
M3 0.8 PK 1239 Ignition 1 Voltage (Gas except LU3)
0.8 PK 1239 Ignition 1 Voltage (Gas except LU3)
M4 0.8 PK/BK 1039 Ignition 1 Voltage (Gas except LU3)
0.8 PK/BK 1039 Ignition 1 Voltage (Gas except LU3)
2 PK 1439 Ignition 1 Voltage (Diesel)
M5 0.8 PK 1039 Ignition 1 Voltage (Gas except LU3)
0.8 PK 1039 Ignition 1 Voltage (Gas except LU3)
2 PK 1439 Ignition 1 Voltage (Diesel)
N1 0.5 PK 1339 Ignition 1 Voltage (Gas)
N2 - - Not Used
N3 0.5 RD/WH 1840 Battery Positive Voltage
0.5 RD/WH 1840 Battery Positive Voltage (MW7)
N4 0.5 PK/WH 2139 Ignition 1 Voltage
0.5 PK/WH 2139 Ignition 1 Voltage (except NQF, NQG or NQH, and NQG or NQH with MYD)
N5 2 BK 550 Ground
P1 0.5 PK/BK 1339 Ignition 1 Voltage (LU3 or HP2)
0.5 PK 1339 Ignition 1 Voltage (LU3)
P2 0.35 YE 5991 Powertrain Relay Coil Control
P3 0.5 L-BU/WH 6311 Cruise/ETC/TCC Brake Signal
0.5 L-BU/WH 6311 Cruise/ETC/TCC Brake Signal (Gas except HP2 or Diesel with PTO)
P4 0.35 D-GN/WH 465 Fuel Pump Relay Control (LU3, LY6 or Diesel with 31 Series and without NQZ)
P5 0.5 PK 439 Ignition 1 Voltage
Connector Part Information 
  • Harness: Engine (Gas)
  • Harness: Engine Chassis (Diesel)
  • OEM: 13513347
  • Service: 19115659
  • Description: 50-Way F GT 280 Metri-Pack Series (BK)
Terminal Part Information 
  • Pins: A1, A5, B4, B5, C3, C5, D3, D4, L1, L2, M1, N1, P1, P2, P4, P5
  • Pins: L4, N3 (Gas)
  • Pins: N4 (Gas or Diesel without NQF or NQG)
  • Pins: P3 (Gas or Diesel without PTO)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: D4, L3, N3 (Diesel)
  • Pin: N4 (Diesel with NQF or NQG)
  • Pin: P3 (Diesel with PTO)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: L5, M2
  • Pin: D4 (Gas)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: F1
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: M3, M4, M5
  • Pin: L3 (Gas)
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pin: N5
  • Pin: L4 (Diesel)
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
RENDER: 1.0x

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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.