U1056low severityNetwork
Loss of GPS Signal
on 2019 Buick Enclave 3.6L V6 · AWD
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.
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