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Where is the orifice tube located in a 1994 Chevy 1500 pickup 5.7L V8 350?

The orifice tube in a 1994 Chevy 1500 5.7L V8 with R134a refrigerant is usually located within the high-pressure side of the air conditioning system, near the receiver/dryer. It's not easily accessible without removing components of the AC system. You'll likely find it on a line connecting the condenser to the receiver/dryer.

Important Note: Because it's part of a sealed refrigerant system, working on the AC system requires proper safety precautions and handling of refrigerant. If you're not experienced in automotive air conditioning repair, it's best to take your vehicle to a qualified mechanic for diagnosis and repair. Improper handling of refrigerant can be dangerous and harmful to the environment.

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