GM Service Manual Online
For 1990-2009 cars only

Scan Tool Method

Use a scan tool in order to clear current diagnostic trouble codes and history diagnostic trouble codes after a completed repair.

DTC B1019, DTC B1025, DTC B1051, and DTC B1053, are latched and can not be cleared. Latched DTCs require replacement of the SDM after correct diagnostics.

Flash DTCs

Flash DTC diagnostics do not clear DTCs or read history DTCs.