Just changed fuel pump in 95 gmc jimmy now it wont start where is the gas kill switch

When the key is turnned on do you hear the fuel pump run? if not find the ground wire or wires coming off the fuel pump they are bolted to the frame with a wire brush and or sand paper clean the frame and the wire eyelet for the ground and try restarting it If I'm not mistaken the fuel pump is in the gas tank and you should replace the sending unit as well as the fuel pump... Then check to make sure your getting fuel to your engine... If you are then it has to be spark/fire...lack of that is...Good Luck

Put in a new ignition switch it will start

They are very bad about coming disconnected when reinstalling them check connection and if good you can hook a jumper wire from positive side of battery to short red wire on driverside above front will next to fender and see if it cuts on or not if not then the pump is bad