what is the cost to replace the oil pressure sending unit on 2001 Pontiac Bonneville

My oil pressure gauge floats back and forth. Oil level is OK

1 answer
If the gauge is responding to changes in engine RPM you should get the pressure checked with a manual gauge.oil pressure is different from volume .you can be low on oil and still have good pressure if the engine is mechanically sound.Depending on the shops labor rate --1hr.labor and about$25.00-$35.00 for part