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 MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 159 (IMMOBILIZER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3055CIRCUIT/SYSTEM VERIFICATION
2013 Buick Regal Turbo Premium, Standard Trans
Circuit/System Verification
2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify that DTC B1370, B1380, or B1441 is not set.
- If any of the DTCs are set
Refer to DTC B1370-B1379, B1380-B1389, or B1440-B1443 .
- If none of the DTCs are set
- If any of the DTCs are set
- Verify the scan tool BCM Accessory parameter changes between Active and Inactive when turning the ignition ON and OFF.
- If the parameter does not change
Refer to Power Mode Mismatch .
- If the parameter changes
- If the parameter does not change
- Verify all available keys are correct for the vehicle. This can be accomplished by comparing the part number that is laser etched on the key to the part number listed in the parts catalog.
- If a key is not correct
Replace the key.
- If all keys are correct
- If a key is not correct
- Verify the scan tool BCM Key Part Number parameter displays a Key Part Number when turning the ignition ON with each key.
- If a Key Part Number is not read
Replace the appropriate key.
- If a Key Part Number is read for each key
- If a Key Part Number is not read
- All OK.
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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.