I'm guessing I left something disconnected... what kind of connector should I look for under the dash? I've been looking around for a while and can't find anything out of place...

 

You left out some important info-like what car you have...

 

i looked in his profile and looks to be a 1996 z28. what he probably did was damage the oil pressure sensor

 

Another vote for a damaged sending unit. Your sending unit is mounted on the back of the block, just under the EGR valve. When you tilt the engine to remove the tranny, the sending unit smacks into the firewall and cracks the unit.

 

Add a "signature"..... to help people help you.

 

Sorry, I'm used to unchecking my signature cause of other forums... I'm going to replace the pressure sensor, wish me luck