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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULESDIAGNOSTIC TESTSDTC B1009: EEPROM CHECKSUM ERRORTESTING
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M
DTC B1009: EEPROM Checksum Error: Testing
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Testing
- If theft deterrent system diagnostic system check has been performed, go to next step. If theft deterrent system diagnostic system check has not been performed, go to THEFT DETERRENT SYSTEM DIAGNOSTIC SYSTEM CHECK .
- Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC), located below steering column. Turn ignition switch to RUN position. Using scan tool, clear DTCs. If scan tool indicates B1009 is current, go to next step. If scan tool does not indicate B1009 as current, go to INTERMITTENTS under TROUBLESHOOTING.
- Replace appropriate module. After repair, go to next step.
- Using scan tool, clear DTCs. Operate vehicle within conditions for running the DTC as specified in supporting text. If DTC resets, go to step 2 .
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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.