I have a 2002 chevy with a 4.3 that always starts hard on damp days. I take the doghouse off and start hitting all the electrical stuff with heat. I refuse to take it in anymore because once they pull it in the garage it heats the moisture out and they charge me for all the same things you read in here. The fuel filter pump, cap rotor whatever else. They think it's cured but it always comes back to haunt. I'm almost positive it has something to do with moisture and electrical connection. I'm still on the hunt for the real problem. It has 135 thousand miles Eric Ebron Jersey on it so I figure things get corroded over the years. The battery and starter have been changed also. Don't bother calling GM's complaint line. They won't tell you a thing and just want to steer you into a dealer. I take the doghouse off and start hitting all the electrical stuff with heat. I refuse to take it in anymore because once they pull it in the garage it heats the moisture out and they charge me for all the same things you read in here. The fuel filter pump, cap rotor whatever else. They think it's cured but it always comes back to haunt. I'm almost positive it has something to do with moisture and electrical connection. I'm still on the hunt for the real problem. It has 135 thousand miles on it so I figure things get corroded over the years. The battery and starter have been changed also. Don't bother calling GM's complaint line. They won't tell you a thing and just want to steer you into a dealer. It runs great after I get it started and starts fine after the first start also.
I am lionsauthenticofficial.com/authentic-eric-ebron-jersey.html having same problem. On www.lionsauthenticofficial.com/authentic-kyle-van-noy-jersey.html damp days it does not start. I have replaved fuel filter, coil and MAS.
I'm having exactly the same problem as everyone above. 2002, 5.3 with 140,000 miles. Won't start on cold mornings. In New Orleans area so it's only about once a week or so in the winter, but it happens on every cold morning, or in the evening if it's a cold day. I use a blow dryer on the electrical control panel under the hood. It has worked every time. I'm not sure why or what I'm heating up. Maybe a mechanic can Kyle Van Noy Womens Jersey figure it out. But don't change your fuel pump, filter etc. if you are experiencing these same won't start problems. You'll be wasting your time and money. There is some glitch somewhere caused by cold temperature. I don't think it is moisture or any fuel system problem.