The inline fuel filter was replaced this week. Looking at the old one, it's not quite as bad as it appeared when installed, but worth changing out, regardless. I'm disappointed that cold start times have not improved after these recent servicings. Must be something else going on that's the cause. But, one other thing completed today definitely made a difference, as new door latch bolts replaced the original ones which saw their rubber inserts both crumble to bits last summer. #ChevyTrucks