Buick Regal: Accessories and Equipment

 Crankcase Ventilation System Description

General Description A crankcase ventilation system is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the intake system is supplied to the crankcase, mixed with blow by gases and then passed through a calibrated orifice into the inta

 Outside Air Temperature Display Malfunction

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedu