B727 MADE A GAR DUE TO NOT RECEIVING CLRNC TO LAND.

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WHILE ASSIGNED AS TWR CIC ON THE SHIFT AT APPROX XA00 AM I APPROVED A VEHICLE ONTO THE FIELD TO PERFORM A LIGHTING INSPECTION. DUE TO PERSONAL AND FAMILY OBLIGATIONS I HAD NOT RESTED DURING THE DAY PRIOR TO WORK; THIS DEPRIVATION CAUSED ME TO FALL ASLEEP WHILE ON POS -- EVEN WHILE DOING A PUZZLE TO STAY AWAKE. AT APPROX XA15 AM APCH SWITCHED THE B727 TO THE TWR ON APPROX A 4 MI FINAL. I DIDN'T HEAR THE PLT UNTIL HE WAS ON A 2 MI FINAL AT WHICH TIME I CLRED HIM TO LAND (FORGETTING THE VEHICLE). HE DIDN'T HEAR ME AND CALLED ME BACK ON SHORT FINAL AND AS I WAS CLRING HIM AGAIN HE STILL DIDN'T HEAR ME AND BEGAN A GAR AND FREQ CHANGE BACK TO APCH. I DID SCAN THE RWY AS I WAS CLRING HIM AND ALTHOUGH THE RWY WAS CLEAN I HAD STILL FORGOTTEN THE VEHICLE. WHEN HE MADE HIS 2ND APCH AND LANDED -- AGAIN CLEAN RWY SCAN; TAXIING TO PARK; THE VEHICLE CROSSED THE INTERSECTING RWY. AT THAT POINT I REMEMBERED. RECENTLY ALB INSTITUTED A NEW PROC WHEREIN THE APCH CTLR (ON MIDS) IS TO FLASH AND OR MANUALLY HDOF ALL ARRS TO THE TWR. THIS PROC WAS NOT ACCOMPLISHED. 1) PRIORITIES -- PROPER REST TO PREVENT SLEEP DEPRIVATION. 2) ALLOWING VEHICLES ACCESS TO THE FIELD WITHOUT RPTING POINTS TO REMIND ME. 3) USE OF PROC TO HDOF AS A SAFETY VALVE FOR AWARENESS.