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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1510 (Wiring Systems - Specifications, Component Views And Connector End Views) >> Diagnostic Information and Procedures >> Passenger Car Zoning

Passenger Car Zoning

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. 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: Passenger Car Zoning View
GM160960Courtesy of GENERAL MOTORS CORP.
Vehicle Zoning Table

Callout Numbers Zone Description
100-199 Engine compartment- All forward of the dash panel
Note: 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 the 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 luggage compartment lid or hatch