mackman22

ok hello all new here i have problem im trying to solve with my mack 2004 granite model c 713 the seatbelt light n buzzer keeps coming on and then the gauges start to flucuwait stops then dose it again sometimes a lot somtimes a couple of times a day anybody had this problem or can steer me in right direction to fix it and now a question dose anybody know if this truck has a cabin airfilter dust is overwheling in it thanks tony