‘96 Suburban LT 4wd. When it snows my truck either won’t start or will start and begin to run poorly shortly there after. This only is happening during snow. Runs like a champ otherwise. I’ve only had a since November. I had no problems until the first good snow. Towed to mech and it started for him every time. He thinks it might be a distributor problem. It won’t start this morning and it does seem like it’s getting no spark. Anyone?