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Results for diagnostic trouble codes, diagnostics, scan tool
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  • Forum Reply: RE: 2009 buick lucerne

    Hi there. The lane departure warning system is controlled by the vehicle direction alert alarm warning (VDAAW) module. The module may have set a diagnostic trouble code (DTC) causing the warning light to illuminate. A scan tool can retrieve the DTC. The DTC is an alphanumeric code that can be used...