B1020low severityBody
TPMS System Initialization Required
on 2014 GMC Terrain 2.4L I4 · FWD
What this code means
The TPMS system requires sensor initialization/relearn after tire rotation, sensor replacement, or wheel service.
Symptoms
- TPMS warning light on
- Tire positions showing incorrect locations
- Pressures displayed for wrong wheels
Common causes
- Tire rotation without TPMS relearn
- Sensor replaced without programming
- Wheels swapped between vehicles
- TPMS reset not performed after service
Diagnostic steps
- Perform TPMS sensor relearn procedure
- Use TPMS tool to trigger each sensor in order
- Follow vehicle-specific relearn procedure
- Verify all sensors are registered
Repair notes
Perform TPMS relearn/initialization procedure per manufacturer instructions after any tire service.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open