why the running lights stay on after van is off? on 2003 GMC Savana 3500

Tried a new battery and alternator and still the lights stay on

by in Bucksport, ME on April 30, 2011
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1 answer
ANSWER by , April 30, 2011
Suspect the headlight switch for prob. Have checked carefully by qualified tech. There may also be a timer problem with body control module.