When the truck does weird things, let a pro look at it.

Or shut it off select gear if it grinds too much that way

 

Clutch brake wear "shouldn't" matter (to a point of course) since when you adjust a clutch you're setting the gap between the release bearing and the brake. Now if your self adjusting clutch has seized up and is no longer adjusting, that is a different story.

There is no set mileage a clutch "should" last either. Clutches last different lengths of time in different applications.

 

All our shop does I swear is replace stupid sensors that do nothing, but break. This week I was driving down the road and beep beep beep beep Critical Mass Critical Mass the coolant sensor decided to die and go to sensor heaven.

Thank goodness the company shop is so used to fixing these things that I was able to call the woman who runs the scheduling for the shop and they got the truck in at night and back to me by morning and everything was fine, but some of these trucks have to many electronics that aren't needed.

 

Had that on my last truck, SAM something or other.

Those tail lights are close enough together that the connector for right will reach left and vice versa. Before changing 'em you can check if the light is the issue by plugging in the other connector.