Does pcm control fuel injectors in 96 thunderbird?

If by PCM you mean the body computer or main computer, then yes it does. Depending on the exact engine and emissions regulations, 49 state vs California emissions there are two types of setups, wet sump which uses only two injector wires, each hooked to 3 or 4 injectors that all fire at once regardless of piston postion, or the California type that has a seperate wire for each injector and they all fire only when needed and is a far superior design. But 95% of t-birds use the wet sump setup.