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 MANUALSCHEVROLET2012CHEVY EXPRESS G2500, VAN PASSENGER, 4.8L ENG VIN AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2335 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - Q1B TO X88)
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN A
Section 2335 (Wiring Systems And Power Management - Component Connector End Views - Q1B To X88)
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN ASECTION Section 2335 (Wiring Systems And Power Management - Component Connector End Views - Q1B To X88)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 GMC Savana, 2013 GMC RV Cutaway, 2013 GMC Cutaway, 2013 Chevrolet RV Cutaway, and 2013 Chevrolet Express. However, it is still accessible from the selected car via links, so may be relevant.
- Component Connector End Views
- Notes
- Q1B 2-3 Shift Solenoid Valve
- Q2 A/C Compressor Clutch
- Q2 A/C Compressor Clutch (C60 and Diesel)
- Q20 Intake Air Flow Valve (LGH)
- Q38 Throttle Body (LC8, LMF, LU3, L20 or L96)
- Q41 Turbocharger Vane Position Control Solenoid Valve (LGH)
- Q53 Fuel Cut-Off Solenoid Valve (KO7 with UFM)
- Q6 Camshaft Position Actuator Solenoid Valve (LC8 or L96)
- Q61 Reductant Injector (LGH)
- Q62 Reductant Purge Solenoid Valve (LGH)
- Q67 Exhaust After treatment Fuel Injector (LGH)
- Q68A CNG Cut-Off Solenoid Valve 1
- Q68B CNG Cut-Off Solenoid Valve 2
- Q68C CNG Cut-Off Solenoid Valve 3
- Q68D CNG Cut-Off Solenoid Valve 4
- Q68E CNG Cut-Off Solenoid Valve 5
- Q69 CNG High Pressure Regulator Solenoid Valve
- Q7 Fuel Injector Fuel Meter Body X1-X6 (LU3)
- Q7 Fuel Injector Fuel Meter Body X7 (LU3)
- Q72 LPG Bypass Solenoid Valve (KO7 with UFM)
- Q8 Control Solenoid Valve Assembly
- R3 Blower Motor Resistor
- R3 Blower Motor Resistor (Diesel)
- R3B Blower Motor Resistor - Auxiliary
- S13A Door Lock Switch - Rear Cargo (Passenger or Cargo with AU3)
- S13D Door Lock Switch - Driver (AU3)
- S13P Door Lock Switch - Passenger (AU3)
- S13P Door Lock Switch - Passenger X2
- S30 Headlamp Switch
- S33 Horn Switch X1
- S33 Horn Switch X2
- S34 HVAC Controls Switch Assembly X1
- S34 HVAC Controls Switch Assembly X2
- S34 HVAC Controls Switch Assembly X3
- S34 HVAC Controls Switch Assembly X4 (C60)
- S34B HVAC Controls Switch Assembly - Auxiliary (C69 with Rear Auxiliary Controls)
- S34F HVAC Controls Switch Assembly - Auxiliary Front (C69 with Rear Auxiliary Controls)
- S34F HVAC Controls Switch Assembly - Auxiliary Front (C69 without Rear Auxiliary Controls)
- S34R HVAC Controls Switch Assembly - Auxiliary Rear (C69 with Rear Auxiliary Controls)
- S39 Ignition Switch
- S40 Passenger Air Bag Disable Switch (C99)
- S51 Telematics Button Assembly (UE1)
- S52 Outside Rearview Mirror Switch (DE5 or DE7)
- S64D Seat Adjuster Switch - Driver (AG1)
- S64P Seat Adjuster Switch - Passenger (AG2)
- S70L Steering Wheel Controls Switch - Left (K34)
- S70R Steering Wheel Controls Switch - Right (W1Y)
- S74 Tow/Haul Mode Switch
- S75 Traction Control Switch (JL4)
- S78 Turn Signal/Multifunction Switch X1
- S78 Turn Signal/Multifunction Switch X2
- S78 Turn Signal/Multifunction Switch X3
- S79D Window Switch - Driver (A31)
- S79P Window Switch - Passenger (A31)
- S85 Auxiliary Blower Motor Switch
- T8A Ignition Coil 1 (LC8, LMF, L20 or L96)
- T8B Ignition Coil 2 (LC8, LMF, L20 or L96)
- T8C Ignition Coil 3 (LC8, LMF, L20 or L96)
- T8D Ignition Coil 4 (LC8, LMF, L20 or L96)
- T8E Ignition Coil 5 (LC8, LMF, L20 or L96)
- T8F Ignition Coil 6 (LC8, LMF, L20 or L96)
- T8G Ignition Coil 7 (LC8, LMF, L20 or L96)
- T8H Ignition Coil 8 (LC8, LMF, L20 or L96)
- X80B Accessory Power Receptacle - Center Console 2
- X84 Data Link Connector
- X85 Steering Wheel Air Bag Coil X1
- X85 Steering Wheel Air Bag Coil X2
- X87LB Sliding Door Jamb Contact Plate - Left Body (E26 with AU3)
- X87RB Sliding Door Jamb Contact Plate - Right Body (Passenger or Cargo with AU3)
- X88 Trailer Connector (UY7)
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:
- • 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.