WARNING: This page is about a different car, the 2009 GMC Canyon and 2009 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: B+ Bus
Courtesy of GENERAL MOTORS CORP.
Fig 2: ABS 1, ABS 2, AUX PWR 1, AUX PWR 2, CNSTR VENT, CIGAR, CLSTR, PCM B, RDO, STOP, and TCCM Fuses