Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 112 (WIRING SYSTEMS AND POWER MANAGEMENT - INTRODUCTION)SCHEMATIC AND ROUTING DIAGRAMSHARNESS ROUTING VIEWS
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Harness Routing Views
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Harness Routing Views
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 1 | X110 (X109 Similar) |
| 2 | Fog Lamp Connector - Right Hand (Left Hand Similar) |
| Callout | Component Name |
|---|---|
| 1 | X108 (LX9/LZ9) |
| 2 | Engine Control Module (ECM) X1 (LZ9)/ Powertrain Control Module (PCM) X1 (LX9) |
| 3 | Engine Control Module (ECM) X2 (LZ9)/ Powertrain Control Module (PCM) X2 (LX9) |
| 4 | Engine Control Module (ECM) X3 (LZ9)/ Powertrain Control Module (PCM) X3 (LX9) |
| 5 | Fuse Block - Underhood |
| Callout | Component Name |
|---|---|
| 1 | X130 |
Fig 4: View Of Underhood Fuse Blocks, Upper Intake Manifold And Connectors X130, X103, X108 Connectors (LZ4)
| Callout | Component Name |
|---|---|
| 1 | X130 |
| 2 | Upper Intake Manifold |
| 3 | X103 |
| 4 | Fuse Block - Underhood X1 |
| 5 | Fuse Block - Underhood |
| 6 | X108 |
| 7 | X100 |
| 8 | Cooling Fan - Right Connector |
| 9 | Camshaft Position (CMP) Actuator Solenoid Connector |
| Callout | Component Name |
|---|---|
| 1 | Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor |
| 2 | X130 |
Fig 6: View Of Brake Fluid Level Switch, Underhood Fuse Block, Control Modules, Coolant Level Switch And X101, G109, X102 Connectors
| Callout | Component Name |
|---|---|
| 1 | Brake Fluid Level Switch |
| 2 | X101 (JL9/J67) |
| 3 | Fuse Block - Underhood |
| 4 | Electronic Brake Control Module (EBCM) (JL9/J67) |
| 5 | Powertrain Control Module (PCM) |
| 6 | G109 |
| 7 | Coolant Level Switch |
| 8 | X102 (JL9/J67) |
| Callout | Component Name |
|---|---|
| 1 | X290 |
| 2 | X206 |
| 3 | X208 |
| Callout | Component Name |
|---|---|
| 1 | X214 |
| 2 | Cigar Lighter |
| 3 | Traction Control Switch (NW7/NW9) or Auxiliary Power Outlet - Front (- NW7/NW9) |
| Callout | Component Name |
|---|---|
| 1 | X216 |
| 2 | X291 |
| 3 | X207 |
Fig 10: Identifying Automatic Transmission Shift Lever Position Indicator And Inflatable Restraint Sensing and Diagnostic Module
| Callout | Component Name |
|---|---|
| 1 | Inflatable Restraint Sensing and Diagnostic Module (SDM) |
| 2 | Automatic Transmission Shift Lever Position Indicator |
| 3 | X214 |
| 4 | Body Control Module (BCM), X1 |
| 5 | Body Control Module (BCM), X3 |
| 6 | X310 |
| Callout | Component Name |
|---|---|
| 1 | Seat Front Vertical Motor (AG1) |
| 2 | Seat Horizontal Motor (AG1) |
| 3 | Heated Seat Cushion Temperature Sensor - Driver (KA1) |
| 4 | Seat Rear Vertical Motor (AG1) |
| 5 | X300 |
| 6 | Heated Seat Control Module - Driver (KA1) |
| Callout | Component Name |
|---|---|
| 1 | X500 |
| Callout | Component Name |
|---|---|
| 1 | X600 |
| Callout | Component Name |
|---|---|
| 1 | X304 |
| Callout | Component Name |
|---|---|
| 1 | X305 |
| Callout | Component Name |
|---|---|
| 1 | X700 |
| Callout | Component Name |
|---|---|
| 1 | X800 |
| Callout | Component Name |
|---|---|
| 1 | Video Screen |
| 2 | Grounding Strap |
| 3 | X315 |
| 4 | DVD Player, X3 |
| 5 | DVD Player |
| 6 | DVD Player, X1 |
| 7 | DVD Player, X2 |
Fig 19: Identifying Left Inflatable Restraint Side Impact Module, Rear Window Defogger Grid X1 And X351 Connector
| Callout | Component Name |
|---|---|
| 1 | Inflatable Restraint Side Impact Module - Left (AY0) |
| 2 | X351 |
| 3 | Rear Window Defogger Grid X1 |
Fig 20: Identifying Rear Window Defogger Grid X2, Right Inflatable Restraint Side Impact Module And G301 Connector
| Callout | Component Name |
|---|---|
| 1 | Rear Window Defogger Grid X2 |
| 2 | G301 |
| 3 | Inflatable Restraint Side Impact Module - Right (AY0) |
| Callout | Component Name |
|---|---|
| 1 | X403 |
| 2 | X413 |
| Callout | Component Name |
|---|---|
| 1 | X402 |
| 2 | X401 |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.