Oil pressure gauge not working Chevy impala 3.4
I have a 2004 chevy impala with a 3.4 v6. I swapped out the gauge cluster from a 3.8 that has an oil pressure gauge. The oil pressure gauge does not work. Can I put an oil sending unit from a 3.8 into my 3.4 to make it work? Or is there something else that needs to be done to make the oil pressure gauge work?