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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN CARGO EXTENDED, 4.8 CREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESDTC P0575CIRCUIT/SYSTEM VERIFICATION
2008 Chevrolet Chevy Express G3500, Van Cargo Extended, 4.8 C
Circuit/System Verification
2008 Chevrolet Chevy Express G3500, Van Cargo Extended, 4.8 CSECTION Circuit/System Verification
IMPORTANT:
- This DTC may be stored as a history DTC without affecting the operation of the BCM. If stored only as a history DTC and not retrieved as a current DTC, do not replace the BCM or ECM.
- Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.
- Verify that B3794 is not set as current.
- If B3794 is set as current, refer to DTC B3794 .
- Road test the vehicle and attempt to engage cruise. Verify that cruise control engages properly and that DTC P0575 is not set.
- If the cruise control system does not operate properly and DTC P0575 is not set, refer to Cruise Control Malfunction .
- If DTC P0575 sets as current, replace the BCM. Clear the DTC and road test the vehicle and attempt to engage cruise. If DTC P0575 resets as current, replace the ECM.
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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.