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

Battery and Fuse Block Locations


Object Number: 1184367  Size: MF
(1)Battery
(2)Fuse Block-Underhood
(3)Fuse Block-I/P
Figure 2:

Ground and Splice Pack Locations


Object Number: 1336190  Size: MF
(1)G105
(2)G107
(3)Splice Pack SP114 (w/ L66 Only)
(4)Splice Pack SP113 (w/ L66 Only)
(5)G109 (w/ L66 Only)
(6)G203 (Secured on I/P Fuse Block)
(7)G201, Splice Pack SP201
(8)G403, Splice Pack SP403
(9)G401, Splice Pack SP401
(10)G301, Splice Pack SP301
(11) G205, Splice Pack SP205, Splice Pack SP203
(12)G207
(13)G103
(14)G101, Splice Pack SP101