Yes but, it is called an orifice tube.
An orifice tube can be removed on the 1999 Dodge Ram 3500 by cutting it out of the liquid line. It is actually easier to replace the whole evaporator tube than just the orifice tube.
To remove the orifice tube on a 1999 Dodge Ram 3500 you need to cut the tube out of the liquid line. Kits are available at your local auto parts store to replace the orifice tube once you have removed it.
This website has the answer http://autorepair.about.com/library/faqs/bl841h.htm
The 98 Blazer doesn't have a Thermal Expansion Valve... it has a fixed orifice tube.
location of orfice tube in a 1999 chevy malibu On your 1999 Malibu the expansion (orifice) tube is located at the condenser to evaporator connection in the evaporator tube.
it is located in the bottom line under the accumulator
You could, but you will have to buy a new line to get a new orifice tube.
The orifice tube is built inside the liquid line and can not be serviced separately.
Its in the outlet of the condenser.
Most orifice tubes are placed in the high pressure line to the evaporator at the fire wall connection. You will have to empty the freon from the system to replace the orifice tube which is not very expensive (the tube, that is).
it's in the high pressure side of the ac line