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.
Test F: Traction Control Indicator Always On
2000 Buick Century CustomSECTION Test F: Traction Control Indicator Always On
- Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK under DIAGNOSIS & TESTING. After performing diagnostic system check, go to next step.
- Turn ignition on, with engine off. Using scan tool check for BCM DTC(s). If DTC B2747 is present, diagnose affected DTC. If DTC B2747 is not present, go to next step.
- Install scan tool. Turn ignition on, with engine off. Using scan tool, go to OUTPUT CONTROLS in instrument panel display. Using scan tool, in the WOW mode to turn instrument panel indicators on and off. If TRAC OFF indicator turns on and off when commanded, go to next step. If TRAC OFF indicator does not turn on and off, go to step 5 .
- Replace EBCM. After replacing EBCM, go to step 6 .
- Repair or replace instrument panel cluster. After repairs, go to next step.
- Using scan tool, clear DTCs. Recheck DTCs. If DTC resets, go to step 2 . If DTC does not reset, system is okay.
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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.