Diagnostic Aids

The IPC will store the code as current only as long as the failure exists. An intermittent failure will be stored as a history DTC B2823.
If DTC B2823 is set only in history, press and release the trip reset switch several times in order to verify the customer concern.

Fig 1: DTC B2823 Or B3574 Diagnosis
Courtesy of GENERAL MOTORS CORP.