Any recommendations for maintenance on a 2006 LBZ that only has 36,000 miles on it? Should I change the serpentine belt, even though it looks new, and is the original? (I have many questions like this) I'm only on the 2nd set of windshield wipers, (they are still good), and this is the Seattle area. Retired, and love it too much to sell it. ( Fastest and most powerful truck I have ever had). SLT too.