The most common causes of U3628 include: Battery management system (BMS) malfunction; High voltage battery cell imbalance; Battery temperature sensor fault; High voltage contactor failure. A professional OBD-II scan tool is recommended for accurate diagnosis.

How do I fix U3628 for Chevrolet / GM Blazer EV?

Recommended steps to address U3628: (1) Schedule service as soon as possible (2) Reduce driving speed and avoid long trips (3) Monitor for additional warning messages (4) Have the vehicle diagnosed by a certified technician. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with U3628?

Driving with U3628 is not recommended for extended distances. Schedule service within a few days to prevent further damage. Monitor for any additional warning lights.

Chevrolet / GM Blazer EV

U3628

Warning

Control Module Variant Configuration Error (BEV Platform)

Severity

Warning

What does U3628 mean?

Fault code U3628 means "Control Module Variant Configuration Error (BEV Platform)". This is a General Motors-specific EV diagnostic trouble code for the GM Ultium / BEV3 platform. It is classified as "battery" with a severity level of "warning". Applicable models: Chevrolet Equinox EV (2024+), Chevrolet Blazer EV (2024+), Honda Prologue (2024+), Cadillac Lyriq (2023+), Chevrolet Silverado EV (2024+).

Possible Causes

Battery management system (BMS) malfunction
High voltage battery cell imbalance
Battery temperature sensor fault
High voltage contactor failure

Recommended Actions

1 Schedule service as soon as possible
2 Reduce driving speed and avoid long trips
3 Monitor for additional warning messages
4 Have the vehicle diagnosed by a certified technician

This code applies to all vehicles. View generic U3628 information →