Engine light stays on due to thighten fuel cap.

What is your question?

So far replace fuel cap, fuel canister and filther, issue started this year now for several months. The tighten fuel cap comes on after first start up when driven just under 2 miles. Each time it's been reset it begins again with in 2 to 3 days.

What makes this problem better or worse?

Probably after first start up and driven just under 2 miles

How long has your 2005 Chevrolet Silverado 1500 HD had this problem?

Several months