2002 GMC Sierra

The engine has been missing on days when there is moisture in the air, but on dry sunny days seems to be running fine. My truck has been sitting for 2 days and not been started. During these 2 days it has rained non stop. I tried started the truck on the third day and it started and ran for maybe 1 minute and then died and now the engine will not start. Could it be the spark plugs and wires or maybe fuel pump or filter