Buick Regal: Diagnostic Information and Procedures

 DTC P1258

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors D

 Radar Sensor Module - Long Range Learn

NOTE: Adaptive Cruise Temporarily Unavailable service message may be displayed if this calibration procedure has to be performed. The radar may have become misaligned. After replacing and programming the Long Range Radar Sensor Module, it is necessary to perform a calibration procedure to align the