gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 3802 > < Component Locations|Page 3799
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Oxygen Sensor: Diagram Information and Instructions

Truck Zoning

All grounds, in-line connectors, pass-through grommets, and splices have identifying numbers that corresponds to where they are located in the vehicle.
The following table explains the numbering system.

Utility/Van Zoning

Diagram Information and Instructions|Page 3802 > < Component Locations|Page 3799