92 firebird tbi wont start

Have 92 Firebird TBI it will not start. The injectors will not fire. Have power at injectors, if I ground injectors they will fire, have grounded at injectors and computer. Have bypassed VATS system. Also replaced computer. Any suggestions?

Its either a bad ECM (where the injrctor ground is controlled), a bad ignition module (sends pulse to ECM so it will ground injectors) or the wire from the distributor to the ECM is broken.

How do you replace the ECM on a 3.1L TBI (92 Firebird)?

92 Firebird, 3.1L V6, will not start when hot. Help!

but it will start when cold? sounds like another failing fuel pump to me.