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No. Only Ford products have an inertia switch for the fuel pump. Chances are your fuel pump is too weak or not working at all. Most GM trucks require 65psi of fuel pressure to start, 70psi when cold.
Will it start by using starting fluid sprayed into the intake ?
There should be a vent tube on your transmission. Check to make sure it is not plugged. Did it do it before you changed the fluid and filter? To properly check fluid level the vehicle needs to be running and warm and in park on a level surface. Just in case you didn't already know. IF your vent tube is open and fluid level is correct you must have internal problems.
This could be many problems. But here is one to try. Turn your key on and make sure your fuel pump runs for 3 seconds. It will hum then quit. If you do not hear the pump running with the key turned on, replace fuel pump relay. This may solve your problem.