Fuse Block - Underhood X3

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Fuse Block - Underhood X3
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Fuse Block - Underhood X3 View
GM1827033Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X3

Pin Wire Circuit Function
1 0.8 PK/BK 5294 Ignition 1 Voltage
2 - - Not Used
3 0.35 D-BU 473 High Speed Cooling Fan Relay Control
4 - - Not Used
5 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
6 - - Not Used
7 0.35 YE 447 Starter Relay Coil Control
8 - - Not Used
9 5 PU 6 Starter Solenoid Crank Voltage (LLT)
3 PU 6 Starter Solenoid Crank Voltage (without LLT)
10-16 - - Not Used
17 0.35 RD/WH 1440 Battery Positive Voltage
0.5 RD/WH 1440 Battery Positive Voltage
18-19 - - Not Used
20 3 RD/BK 9342 Battery Positive Voltage (JL7)
21-23 - - Not Used
24 0.75 PK 239 Ignition Voltage
25-26 - - Not Used
27 PK/BK 5293 Ignition 1 Voltage
28-29 - - Not Used
30 0.35 BN 7448 Vacuum Pump Motor Relay Control (LLT)
31 0.35 D-GN 59 A/C Compressor Clutch Supply Voltage
32 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control
33 0.35 GY 5127 Afterboil Coolant Pump Supply Voltage (LLT)
34-35 - - Not Used
36 0.75 PK 239 Ignition Voltage
37-39 - - Not Used
40 0.8 PK 2039 Ignition 1 Voltage (LLT)
1 BN 2039 Ignition 1 Voltage (LC3 or LH2 without JL7)
41 1 PK/BK 5290 Ignition 1 Voltage (LLT)
0.8 PK/BK 5290 Ignition 1 Voltage (LH2)
0.35 PK/BK 5290 Ignition 1 Voltage (LC3)
42 1 OG 1470 Brake Booster Pump Motor Supply Voltage (LLT)
43-44 - - Not Used
45 0.35 BN 5069 Powertrain Relay Control
46 - - Not Used
47 1 PK/BK 5292 Ignition 1 Voltage
48-50 - - Not Used
51 1 PK/BK 5291 Ignition 1 Voltage
52-53 - - Not Used
54 5 RD/BK 342 Battery Positive Voltage
Connector Part Information 
  • OEM: 7283-9457-3W
  • Service: 19153182
  • Description: 54-Way F YESC Kaizen Series (BK)
Terminal Part Information 
  • Pins: 1, 11, 23, 27, 33, 38, 40, 41, 47, 51
  • Terminal/Tray: 7116-4101-08/9
  • Core/Insulation Crimp: Pins 1, 27 - C/A
  • Core/Insulation Crimp: Pins 11, 23, 33, 38, 40, 41, 47, 51 - E/A
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)
  • Pins: 3, 5, 7, 19, 22, 24, 30, 31, 32, 34, 36, 49
  • Terminal/Tray: 7116-4100-08/9
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)
  • Pin: 9
  • Terminal/Tray: 7116-4122-02/10
  • Core/Insulation Crimp: A/B
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
  • Pins: 54
  • Terminal/Tray: 7116-3250/10
  • Core/Insulation Crimp: G/3
  • Release Tool/Test Probe: 12094430/J-35616-22 (RD)
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.