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 MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 44 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC TESTSDTC B0051: DEPLOYMENT COMMANDEDDIAGNOSTIC PROCEDURE
2001 Chevrolet Cavalier LS, 2.4 T
Diagnostic Procedure
2001 Chevrolet Cavalier LS, 2.4 TSECTION Diagnostic Procedure
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- If SIR Diagnostic System Check has been performed, go to next step. If SIR Diagnostic System Check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK .
- Turn ignition off. If air bags have deployed, go to step 5. If air bags have not deployed, go to next step.
- Inspect front of vehicle and undercarriage for signs of impact. If impact has occurred, go to step 5. If no impact has occurred, go to next step.
- Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION. Go to step 6.
- Using scan tool, request SIR DTC display. If history DTC's exist, go to Diagnostic aids for specific displayed DTC. Replace components and perform inspections as required following an accident. See POST-COLLISION INSPECTION . Go to next step.
- Reconnect all SIR components. Using scan tool, clear all DTC's. Road test vehicle, then check for SIR DTC's. If DTC B0051 is retrieved, go to step 2. If DTC B0051 is not retrieved, system is normal. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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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.