Calling is fine. The convo sounds okay as well. Just be yourself.
I think you are spending too much time worrying about whether something you did or felt like doing was wrong. Nothing you do is going to completely ruin your chances of ever getting back together. If you do something that results in a negative then don't do it again. There are no rules.
I'm glad you worked out the truck situation. I agree with UD that his responses are probably related to being uncomfortable. He probably wants to keep using the truck and won't say so. Or maybe he trashed it out.
You're doing great T and your attitude is excellent. Keep it up.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt