1995 Coupe- I have checked the tire pressure in the tires and all of them are OK. I know one of the wheel sensors has gone bad, now how do I determine which one it is---without going to the dealer.  

If you had a low tire the DIC would indicate "low tire"

Does sound like on of your sensors has failed.

In order to determine which one is faulty you will have to interrogate the LTPWS by grounding certain pins on the data line connector. The pins are #5 to #6.

The system will then show a series of flashes on the DIC
LTPWS light. You have to count the flashes to determine which sensor is bad.

The sensors are normally related to the wheels by color.
In this manner you can locate the proper sensor without having to pull all the wheels.

Read the info on this site it will familiarize the use of the computer for trouble shooting.

If your not comfortable with the procedure then a dealer would be your best bet.

Before letting them work on the car make sure they have
a good idea of what they are doing.

http://www.corvettephotographs.com/c4vettes/index.htm