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.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1673 (POWER STEERING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0460CIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Testing
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X4 harness connector at the PSCM.
- Ignition OFF, test for 10-200 Ξ© of resistance between the signal circuit terminal 1 and the signal circuit terminal 3.
- If not within the specified range, test both signal circuits for an a short to ground or an open/high resistance. If the circuits test normal, replace the power steering motor.
- Ignition OFF, test for 3K-10KΞ© of resistance between the signal circuit terminal 6 and the signal circuit terminal 3.
- If not within the specified range, test both signal circuits for an a short to ground or an open/high resistance. If the circuits test normal, replace the power steering motor.
- Ignition OFF, test for 6K-20K Ξ© of resistance between the signal circuit terminal 5 and the signal circuit terminal 3.
- If not within the specified range, test both signal circuits for an a short to ground or an open/high resistance. If the circuits test normal, replace the power steering motor.
- Ignition OFF, test for greater than 1M Ξ© of resistance between the signal circuit terminal 3 and the motor flange.
- If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the power steering motor.
- If all circuits test normal, replace the PSCM.
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:
- 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.