I was wondering if everybody has an oil fill plug on the rear diff. I know there is a recall for the rear diff gears drying out or not getting properly lubricated. I ask the dealership if my truck is on the recall list and they told me that It's not. When I look at my rear diff I don't have a fill plug. Is this ok? how do i check the level without this?
There should be a rubber plug about halfway up on the rear cover of the differential. You can take it off and check the level, should be approx 1/4" below the opening. Just had mine off tonight and noticed it was a bit low so I added a bit to bring it up.