2001 GMC Jimmy AMBER LIGHT REMAIN ON. LIKE A ENGINE Symbol

AFTER STARTS MY CAR 'AMBER ENGINE SYMBOL' REMAIN LIGHTED ON FRONT OF DASH BOARD. ALL PARAMETER LOOKS GOOD, CAR IS RUNING SMOOTH EXCEPT AMBER LIGHT IS ON ALL THE TIME WHILE DRIVING DOWN THE ROAD. WHEN RESET, SIGN GOES OFF. WHEN THE CAR STARTS NEXT TIME AGAIN AMBER ENGINE SYMBOL APPPEARS.