Does a 94 Chevy truck have mass air sensor?

Most likely no. While some later-model 1994 Chevy trucks *might* have had mass air flow (MAF) sensors, the majority of them, especially those with the common small-block V8s or inline-6 engines, used a throttle position sensor (TPS) and a less sophisticated system for fuel metering. The transition to widespread MAF sensor use in GM vehicles happened gradually through the mid-to-late 1990s.

To be certain, you need to:

* Check your owner's manual: This will specify the exact engine and fuel system in your truck.

* Look under the hood: A MAF sensor is typically a rectangular box located in the air intake tube, close to the air filter.

* Check your parts catalog: Using your VIN number, you can look up parts diagrams online (like at a parts store website) to see if a MAF sensor is listed for your specific truck's engine.

Without knowing the exact engine and trim level of your '94 Chevy truck, it's impossible to say for sure.