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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1100 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> SIR Disabling and Enabling Zones

SIR Disabling and Enabling Zones

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Refer to SIR Service Precautions  before disabling the SIR system.

The SIR system has been divided into Disabling and Enabling Zones. When performing service on or near SIR components or SIR wiring, it may be necessary to disable the SIR components in that zone. It may be necessary to disable more than one zone depending on the location of other SIR components and the area being serviced, refer to SIR Zone Identification Views (Aztek)  or SIR Zone Identification Views (Rendezvous) . Refer to the illustration below, to identify the specific zone or zones in which service will be performed. After identifying the zone or zones, proceed to the disabling and enabling procedures for that particular zone or zones.

Fig 1: SIR Disabling and Enabling Zones
GM853774Courtesy of GENERAL MOTORS CORP.
SIR Disabling and Enabling Zones

Zone Description
1 Inflatable Restraint Front End Sensor (EFS) - Refer to SIR Disabling and Enabling Zone 1 .
2 Driver/Left Side Impact Sensor (SIS) and Seat Belt Pretensioner-Refer to SIR Disabling and Enabling Zone 2 .
3 Inflatable Restraint Steering Wheel Module and Coil-Refer to SIR Disabling and Enabling Zone 3 .
4 Not Used
5 Inflatable Restraint Instrument Panel (I/P) Module-Refer to SIR Disabling and Enabling Zone 5 .
6 Passenger/Right Side Impact Sensor (SIS) and Seat Belt Pretensioner-Refer to SIR Disabling and Enabling Zone 6 .
7 Driver Seat with LF Side Impact Module-Refer to SIR Disabling and Enabling Zone 7 .
8 Not Used
9 Passenger Seat with RF Side Impact Module and Inflatable Restraint Sensing and Diagnostic Module (SDM) - Refer to SIR Disabling and Enabling Zone 9 .
10 Not Used
11 Not Used
12 Not Used