GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

B3787

DTC B3787

BCM

B3788

DTC B3788

BCM

P0530

DTC P0530, P0532, or P0533

ECM

P0532

DTC P0530, P0532, or P0533

ECM

P0533

DTC P0530, P0532, or P0533

ECM

P0645

DTC P0645, P0646, or P0647

ECM

P0646

DTC P0645, P0646, or P0647

ECM

P0647

DTC P0645, P0646, or P0647

ECM

P1640

DTC P1640 in Engine Controls - 2.2L (L61)

ECM