Where is the temperature sending unit located on a 1996 4.3 Chevrolet blazer?

The temperature sending unit (also sometimes called the coolant temperature sensor) on a 1996 Chevrolet Blazer with a 4.3L engine is typically located on the engine block, near the thermostat housing. However, there are sometimes two sensors; one for the gauge and another for the computer (ECM).

To be certain:

1. Consult your owner's manual: This is the best source for the exact location.

2. Look at a repair manual or online diagrams: Websites like AutoZone, Advance Auto Parts, or Haynes/Chilton manuals often have diagrams showing sensor locations for your specific vehicle year and engine. Search for "1996 Chevrolet Blazer 4.3L engine diagram".

3. Visually inspect the engine: Look near the thermostat housing, and on the engine block itself. There might be two sensors – one will likely have a single wire (for the gauge) and the other may have multiple wires (for the computer). The one wire sensor *might* be the one for your gauge. However, without the proper diagrams, you shouldn't assume.

Caution: Be careful when working around the engine, as it may still be hot. Wait for it to cool completely before attempting to locate the sensor.