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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1473 (Wiring Systems (General Information)) >> Diagnostic Information and Procedures >> Utility/Van Zoning

Utility/Van Zoning

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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.
Utility/Van Zoning

Zone 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