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Diagnostic Code Index

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 GMC Savana Special, 2006 GMC Savana Camper Special, 2006 GMC Savana, 2006 Chevrolet RV Cutaway, and 2006 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

DTC Description
DTC B1000  Electronic Control Unit (ECU) Performance
DTC B1004  Keep Alive Memory (KAM) Reset
DTC B1007  EEPROM Write Error
DTC B1009  EEPROM Checksum Mismatch
DTC B1420  Device Voltage
DTC B1440  Power Mode Master Input Circuits Mismatch
DTC B1477 or B1478 
  • DTC B1477 Retained Accessory Power Circuit Low
  • DTC B1478 Retained Accessory Power Circuit High
DTC U0073  High Speed Communication Bus
DTC U0100-U0299  Lost Communication With Control Module
DTC U1000 and U1255 
  • DTC U1000 Class 2 Data Link
  • DTC U1255 Class 2 Data Link
DTC U1001-U1254  Lost Communication With Control Module
DTC U1300, U1301, or U1305 
  • DTC U1300 Class 2 Data Link Low
  • DTC U1301 Class 2 Data Link High
  • DTC U1305 Class 2 Data Link Low or High
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