For 1990-2009 cars

• | Do not expose the inflator modules to temperatures above 65°C (150°F).

• | Verify the correct replacement part number. Do not substitute a component from a different vehicle.

• | Do not repair any of the following components. Service these components by replacement only:

- | The inflatable restraint sensing and diagnostic module (SDM)

- | The inflatable restraint I/P module

- | The inflatable restraint steering wheel module

- | The inflatable restraint steering wheel module coil

- | The inflatable restraint side impact sensors (SIS)

- | The inflatable restraint side impact modules

- | The seat belt pretensioners

• | Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

• | Discard any of the following components if the component has been dropped from a height of 91 centimeters (3 feet) or greater.

- | The inflatable restraint sensing and diagnostic module (SDM)

- | The inflatable restraint IP module

- | The inflatable restraint steering wheel module

- | The inflatable restraint steering wheel module coil

- | The inflatable restraint side impact sensors (SIS)

- | The inflatable restraint side impact modules

- | The seat belt pretensioners

• | When you replace the SDM, verify that the following conditions are met:

- | The mounting surface is clean.

- | The arrow on the module points toward the front of the vehicle.

- | The SDM is flat on the mounting surface, parallel to the vehicle datum line.

- | The SDM fasteners are installed and tightened as specified.

• | When you replace an inflatable restraint side impact sensor (SIS), verify that the following conditions are met:

- | The mounting surface is clean.

- | The SIS is flat on the mounting surface.

- | The SIS fasteners are installed and tightened as specified.

• | In order to avoid setting false diagnostic trouble codes, only apply power to the SIR system when one of the following two conditions is met:

- | All SIR system components are properly mounted and electrically connected.

- | A diagnostic procedure directs you to apply power.