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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2010CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISBRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION & PROCEDURESDTC C0055 OR P0609CIRCUIT/SYSTEM TESTING
2010 Chevrolet Chevy Express G3500, Van Passenger Extended
Circuit/System Testing
2010 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Circuit/System Testing
- Verify that no DTCs are set in the ECM or TCM.
- If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Ignition OFF, disconnect the harness connector at the EBCM.
- Ignition ON, test for greater than 10 V between the signal circuit terminal 20 and ground.
- If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
- Ignition OFF, disconnect the appropriate harness connector listed below at the ECM:
- X1 (LMF/L20/L96 or LU3)
- X2 (Diesel)
- Ignition ON, verify that a test lamp does not illuminate between the appropriate signal circuit terminal listed below and ground.
- Terminal 50 X1 (LU3)
- Terminal 57 X1 (LMF/L20 or L96)
- Terminal 54 X2 (Diesel)
- If the test lamp illuminates, test the signal circuit for a short to voltage.
- If the circuit tests normal, replace the EBCM.
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.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.