The tranny issue is actually just a control module mounted on the side of the transmission. It’s a $120 part that fixes the slipping and hard shift problem. Sometimes if the alternator is failing that can cause the shift problem as well. The electrical systems were finicky if they weren’t getting correct voltage.

They are Isuzu designs. GM used to be a majority owner of Isuzu. Now they still have the partnership in place for HD vehicles and engine applications.

That’s because most of these pipeline have been in operation over 60 years while most are designed for 30 to 40 year lifespans. But it’s becoming so difficult to permit even replacement or upgrades that let are left in service and maintenance becomes a major issue. Most companies do a great job focusing on…