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Utility/Van Zoning

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

Fig 1: Utility/Van Zoning
GM160996Courtesy of GENERAL MOTORS CORP.
Callout Numbers Zone Description
100-199 Engine compartment (All forward of the dash panel)
001-099 are additional for the engine compartment (Only to be used if all 100-199 items are used)
200-299 Within the instrument panel area
300-399 Passenger compartment (From instrument panel to the rear wheelhouse)
400-499 Luggage compartment (From the rear wheelhouse to the rear of the vehicle
500-599 Within the left front door
600-699 Within the right front door
700-799 Within the left rear door
800-899 Within the right rear door
900-999 Within the liftgate or endgate door