Where is the Oil sending unit on a 89 S-10 Blazer?
The oil sending unit on a 1989 S-10 Blazer is located on the engine block, near the oil filter. It's usually a small, threaded device with one or two wires attached. However, the exact location might vary slightly depending on the engine (e.g., 2.5L, 2.8L, 4.3L V6). You'll need to consult a repair manual specific to your engine for the most precise location. Looking at a diagram in a Haynes or Chilton manual (or a digital equivalent) is highly recommended before attempting to locate it.