U0305high severityNetwork
Software Incompatibility with ABS Control Module
on 2002 Chevrolet Express 6.0L V8 Vortec · RWD
What this code means
Data incompatibility between the ABS module and other vehicle control modules.
Symptoms
- ABS light on
- Stability control disabled
- Brake assist not working
- Traction control off
Common causes
- ABS module software outdated
- Software mismatch after partial update
- Wrong ABS calibration installed
Diagnostic steps
- Check ABS module software version
- Compare software compatibility with ECM
- Reprogram ABS module
- Check for TSBs
Repair notes
Reprogram ABS module with correct software revision. Must be compatible with other chassis modules.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus