GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

B1023

DTC B1023

DDM/PDM

B1544

DTC B1544, B1600, or B1605

DDM/PDM

B1580

DTC B1580, B1590, B1610, or B1620

DDM/PDM

B1590

DTC B1580, B1590, B1610, or B1620

DDM/PDM

B1600

DTC B1544, B1600, or B1605

DDM/PDM

B1605

DTC B1544, B1600, or B1605

DDM/PDM

B1610

DTC B1580, B1590, B1610, or B1620

DDM/PDM

B1620

DTC B1580, B1590, B1610, or B1620

DDM/PDM

B1640

DTC B1640 or B1645

DDM/PDM

B1645

DTC B1640 or B1645

DDM/PDM

B1722

DTC B1722

DDM/PDM

B3808

DTC B3808

BCM

B3809

DTC B3809

BCM

B3819

DTC B3819

BCM

B3820

DTC B3820

BCM

B3821

DTC B3821

BCM

B3822

DTC B3822

BCM

B3823

DTC B3823

BCM

B3824

DTC B3824

BCM