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 MANUALSCHEVROLET2003VENTURE BASE, VAN CARGO EXTENDEDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR COMMUNICATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC U1500: INTER-DEVICE DEDICATED BUS MALFUNCTIONCONDITIONS FOR RUNNING THE DTC
2003 Chevrolet Venture Base, Van Cargo Extended
Conditions for Running the DTC
2003 Chevrolet Venture Base, Van Cargo ExtendedSECTION Conditions for Running the DTC
The microprocessor runs the program to detect an internal fault during module power up and every 10 seconds thereafter until the module re-enters the sleep mode.
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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.