Hello I have a 89 1500 silverado 2 wd I recently moved inta a place that has a steep driveway..Ive noticed that when I get to the top the truck smells like something is burning..its not real bad but still noticable...I changed the oil and gear case fluid less than 1000miles ago..I do have to accelerate and push it to get up the hill, does this smell mean mean something is getting worn out..I noticed a friends jimmy smelled burnt too Do you know what is going on and if this hill climbing is ok on the truck