A bulletin is being released explaining the new SIR system disabling and enabling procedure for all 2003-06 GM cars and trucks.
IMPORTANT:Â Refer to the bulletin for details and follow the procedure exactly. Here are some highlights only.
Past experience, ongoing testing, and improved quality and reliability of the Supplemental Inflatable Restraint (SIR) systems enables simplification of the SIR Disabling and Enabling procedure. Testing has shown that it is not always necessary to disconnect air bag(s) in the area of repairs.
The new SIR Enabling and Disabling procedure is less invasive (therefore eliminating potential squeak and rattle conditions that may occur from the previous procedure) and is a simpler and quicker approach.
Future designs will eliminate certain deployment loop in-line connectors. Removing the in-line connectors makes the SIR deployment loop even more robust.
The new SIR Enabling and Disabling procedure requires only a fuse removal and/or the negative battery cable disconnect.
Deployment power is available for as much as one minute after disconnecting the vehicle power. Waiting one minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.
IMPORTANT:Â Refer to the bulletin for details and follow the procedure exactly.
- Thanks to Chuck Weiseckel
IMPORTANT:Â Refer to the bulletin for details and follow the procedure exactly. Here are some highlights only.
Past experience, ongoing testing, and improved quality and reliability of the Supplemental Inflatable Restraint (SIR) systems enables simplification of the SIR Disabling and Enabling procedure. Testing has shown that it is not always necessary to disconnect air bag(s) in the area of repairs.
The new SIR Enabling and Disabling procedure is less invasive (therefore eliminating potential squeak and rattle conditions that may occur from the previous procedure) and is a simpler and quicker approach.
Future designs will eliminate certain deployment loop in-line connectors. Removing the in-line connectors makes the SIR deployment loop even more robust.
The new SIR Enabling and Disabling procedure requires only a fuse removal and/or the negative battery cable disconnect.
Deployment power is available for as much as one minute after disconnecting the vehicle power. Waiting one minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.
IMPORTANT:Â Refer to the bulletin for details and follow the procedure exactly.
- Thanks to Chuck Weiseckel

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