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Section 179 (Electrical Component Locator): Grounds

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
GROUNDS LOCATION

Component Location
Automatic Transfer Case/ABS Ground Left rear frame rail. See Figure.
Electronic Brake Control Module (EBCM) Ground (GNO) On left frame rail. See Figure.
Engine Ground Strap (8.1L) Rear of engine. See Figure.
G100 On left front body mount. See Figure.
G102 (4.8L, 5.3L & 6.0L) On left side of engine block. See Figure.
G102 (8.1L) On left side of engine block. See Figure.
G103 On right rear of engine block. See Figure.
G104 (4.8L, 5.3L & 6.0L) On left rear of engine block. See Figure.
G104 (8.1L) On left rear of engine block. See Figure.
G105 On lower left front of engine block.
G106 On right front of engine block. See Figure.
G107 Engine ground strap. See Figure.
G110 (1500 Series) On left front body mount. See Figure.
G110 (2500 Series) On left front body mount. See Figure.
G200 Near right "A" pillar. See Figure.
G203 Near left "A" pillar. See Figure.
G302 On left rear body mount. See Figure.
G305 On left "B" pillar. See Figure.
G306 On right "B" pillar. See Figure.
G401 On left rear body mount.
G402 Near rear bumper.
G403 On left rear body mount. See Figure.
G410 Behind right rear quarterpanel. See Figure.