* Engine Coolant Temperature (ECT) Sensor: This is the most common temperature sensor and is usually located in the engine block, near the thermostat housing. It's a relatively small sensor with one or two wires connected to it. You'll likely need to consult a repair manual specific to your 1993 Suburban's engine (e.g., 5.7L, 6.5L diesel) for the precise location. A picture of your engine would also help significantly.
* Other Temperature Sensors: There might be other temperature sensors, such as one for the transmission fluid or for the climate control system. These will be located in different places.
To find the ECT sensor (the most likely one you're asking about):
1. Consult a Repair Manual: A Haynes or Chilton repair manual for your specific year and engine will give you the exact location with diagrams. This is the most reliable method.
2. Online Forums: Search online forums dedicated to Chevy Suburbans (like forums.chevytalk.org or similar sites) and look for threads discussing the ECT sensor. Provide details about your engine (e.g., "1993 Chevy Suburban 5.7L ECT sensor location"). Someone with a similar vehicle may have pictures or more specific advice.
3. Visual Inspection (with caution): With the engine cool, carefully look around the thermostat housing and the engine block. Look for a small sensor with wires attached. Be careful not to touch hot surfaces!
Without knowing the specific engine in your 1993 Chevy Suburban, it's impossible to give a precise location. Providing the engine size (e.g., 5.7L, 6.5L diesel) will greatly help in finding the answer.
