Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1996CENTURY SEDAN L4-2.2L VIN 4REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSSUPPLEMENTAL INFLATABLE RESTRAINT (SIR) SYSTEM
1996 Buick Century Sedan L4-2.2L VIN 4
Supplemental Inflatable Restraint (SIR) System
1996 Buick Century Sedan L4-2.2L VIN 4SECTION Supplemental Inflatable Restraint (SIR) System
SIR Symbol:
The Supplemental Inflatable Restraint (SIR) symbol is used on schematics to alert the technician to the following important caution.
CAUTION: This vehicle is equipped with SIR. Refer to CAUTIONS in SIR under Air Bags and Seat Belts before performing service on or around SIR components or wiring. Failure to follow CAUTIONS could result in possible air bag deployment, personal injury, or otherwise unneeded SIR system repairs.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.