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 MANUALSCHEVROLET2010EXPRESS 2500 V8-4.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTDIAGRAMSELECTRICAL DIAGRAMS
2010 Chevrolet Express 2500 V8-4.8L
Electrical Diagrams
2010 Chevrolet Express 2500 V8-4.8LSECTION Electrical Diagrams
ENGINE CONTROLS SCHEMATICS
Module Power, Ground, Serial Data and MIL
Engine Data Sensors - 5-Volt and Low Reference
Engine Data Sensors - Pressure and Temperature Controls
Engine Data Sensors - Heated Oxygen Sensors (1 of 2)
Engine Data Sensors - Heated Oxygen Sensors (2 of 2)
Engine Data Sensors - Throttle Controls
Ignition Controls - Ignition System Coils 1, 3, 5, and 7
Ignition Controls - Ignition System Coils 2, 4, 6, and 8
Ignition Controls - CKP, CMP and Knock Sensors
Fuel Controls - Fuel Pump Controls (RPO L20 Only)
Fuel Controls - Fuel Injectors
Fuel Controls - EVAP Controls
Controlled/Monitored Subsystem References
NOTE: VIN A, RPO L20, Flexible Fuel, Gas/ALC, 8 Cylinder, 4.8L, SFI, Iron, GM
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.