GM-GMC: Keyless entry, power locks, keyless entry

Question
I just bought a 96 gmc 2500 it has power locks but all I got was a single key. How can find out if it has keyless entry without buying a remote ?

Answer
The easiest way that I can think of would be to take the VIN into your local dealer and ask them to check and see if that particular vehicle was equipped with keyless entry.  If it is, then you can find out what remote you require at the same time or atleast get a price.  
Hope this helps