Storm L4-1800cc 1.8L DOHC (1993)
Impact Sensor: Technical Service Bulletins
SIR Sensor - Replacement Policy Revised
Number: 93-202-9J
Section: 9J
Date: MAY 1993
Corporate Bulletin No.: 119015R
ASE No.: B1
Subject:
SUPPLEMENTAL INFLATABLE RESTRAINT (SIR) SENSOR REPLACEMENT POLICY REVISED
Model and Year:
1990-93 STORM
1991-93 CAPRICE, CORSICA AND BERETTA WITH SIR
THIS BULLETIN REVISES DEALER SERVICE BULLETIN 92-79-9J, DATED JAN. 1992. THE 1993 MODEL YEAR HAS BEEN ADDED FOR
CAPRICE, CORSICA, BERETTA AND STORM. PLEASE NOTE VEHICLES MENTIONED UNDER "EXCEPTIONS." ALSO, UPDATE
BULLETIN 92-79-9J TO REFLECT ANY CHANGES.
General Motors has revised its policy on replacement of SIR sensors. Until now, all system sensors were replaced after an SIR deployment event. The
new replacement policy specifies mandatory replacement of the sensors in the area of accident damage only.
The "area of accident damage" is defined as that area of the vehicle which is crushed, bent, or damaged in other ways. An example might be a front-end
collision in which the forward portions of the vehicle have contacted another vehicle, tree, guardrail, etc. In this example, sensor(s) on the radiator tie bar
would require replacement, since that portion of the vehicle was damaged in the accident. Sensors in the passenger compartment, such as the Passenger
Compartment Discriminating Sensor, the Arming Sensor, or the Dual Sensor (if equipped), would not require mandatory replacement. Of course, if the
DERM sets a code and the diagnostic chart leads to a faulty sensor that was not in the area of accident damage, that sensor should also be replaced.
Sensors in the area of accident damage should be replaced even if those sensors do not appear to be damaged. Do not attempt to determine whether a
sensor is OK-ALWAYS replace it if it is in the area of accident damage.
Exceptions to the new policy are:
-
Corvette and GEO Metro Convertible. These vehicles still require all sensors to be replaced after a deployment-level collision.
Also, if a sensor is in an area of accident damage, but the SIR system has NOT been deployed, replace the sensor. The sensor bracket may be slightly
bent, wiring may be damaged, etc., and the sensor might not work properly in another collision. Again, do not attempt to determine whether a sensor is
OK - ALWAYS replace it if d is in the area of accident damage.