GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Ground and Power


Object Number: 1823369  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, EBCM, ECM
Underhood Fuse Block B+
Figure 2:

BCM, EBCM, ECM


Object Number: 1823370  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, Tap Up/Tap Down Switch
Ground and Power
Underhood Fuse Block IBCM 1 Fuse, BCM AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses and Ignition Switch
Figure 3:

BCM, Tap Up/Tap Down Switch


Object Number: 1823372  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, EBCM, ECM
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
G303