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 MANUALSCHEVROLET2008EXPRESS 2500 V8-4.8LREPAIR AND DIAGNOSISDIAGRAMSCOMPONENTSWHEELS/VEHICLE UNDERBODY COMPONENT VIEWS
2008 Chevrolet Express 2500 V8-4.8L
Wheels/Vehicle Underbody Component Views
2008 Chevrolet Express 2500 V8-4.8LSECTION Wheels/Vehicle Underbody Component Views
Wheels/Vehicle Underbody Component Views
Frame and Underbody
Frame And Underbody:
1 - Wheel Speed Sensor (WSS) - LR (JL4)
2 - Rotor - LR
3 - Rotor - LF
4 - Wheel Speed Sensor (WSS) Connector - LF
5 - Electronic Brake Control Module (EBCM)
6 - Brake Pressure Differential Switch (Light Duty)
7 - Floor Panel - RF
8 - Yaw and Lateral Acceleration Sensor (JL4)
9 - Wheel Speed Sensor (WSS) Connector - RF
10 - Rotor - RF
11 - Rotor - RR
12 - Wheel Speed Sensor (WSS) - RR (JL4)
Fuel Tank (NE7)
1 - Fuel Tank Pressure (FTP) Sensor Connector
2 - Fuel Pump and Sender Assembly Connector
Fuel Tank (w/o NE7)
1 - Fuel Pump and Sender Assembly Connector
2 - Fuel Tank Pressure (FTP) Sensor Connector
Rear of the Engine (4.3L/5.3L)
1 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
2 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
3 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
4 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
5 - Park/Neutral Position (PNP) Switch
Engine Harness - Oxygen Sensors (4.8L/6.0L)
1 - C128 (Cutaway)
2 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector
3 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector
4 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector
5 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector
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.
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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.