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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 144 (BODY CONTROL MODULES)DIAGNOSTIC TESTSDTC B1009: EEPROM CHECKSUM ERRORDESCRIPTION
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

DTC B1009: EEPROM Checksum Error: Description

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Description
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

EEPROM check sum error detection is handled inside control module. No external circuits are involved. Control module compares its previously stored checksum with checksum calculated when ignition switch is first turned to RUN position. When DTC B1009 is stored, control module will operate from preset critical operating data for those blocks of data that have failed check sum test. Blocks of data that have not failed check sum test are not affected. DTC will clear when control module runs a successful check sum test of EEPROM.

RENDER: 1.0x

NO RELATED

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