1994 Pontiac Grand Am No start

The fact that your engine has a crank sensor likely means it has a cma sensor as well. The ecm will use data from both sensors to calculate Piston locations with the crank sensor and also know when to inject fuel at the right times from the cam sensor. If cam sensor is faulting as an example it may be trying to open an electronic injector on an exhaust stroke instead of on a intake/compression stroke stage. Just a thought but the ecm does need data from both crank and cam. An engine can sometimes start with a crank sensor down as it in some engines can still determine piston position via the cam readings from the cam sensor. But an engine with a cam sensor down will never start as all the ecm can determine is the position of #1 piston via the crank sensor and hence not enough info for the ecm to fuel the engine properly.