U1056low severityNetwork
Loss of GPS Signal
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The navigation or telematics module has lost the GPS satellite signal for position data.
Symptoms
- Navigation position lost
- GPS coordinates unavailable
- Map position incorrect or not updating
- Telematics location unknown
Common causes
- GPS antenna failure
- GPS antenna cable damaged
- Antenna connector loose
- Windshield metallic coating blocking signal
- Module GPS receiver failure
Diagnostic steps
- Check GPS antenna connection
- Test GPS antenna signal with known good antenna
- Inspect antenna cable routing
- Check for aftermarket window tint blocking GPS
- Test module GPS receiver
Repair notes
Check GPS antenna and cable connection. Metallic window tint can block GPS signal.
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Serious DIY~$100
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Autel MaxiCOM MK808S →
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Autel MaxiSys MS906 Pro →
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✓ Autel official store
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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