2002 Chevy venture positive battery terminal was corroded and jump started vehicle now the power unlock button on drivers side and passenger side won't work and switch for rear quarter vent windows won't work..the power locks switch works and the vehicle still locks all doors when take out of park and still unlocks doors when put in park...

Do you know how to use a wiring diagram along with a DVOM - digital volt ohm meter to test electrical circuit's ? Plus ,do you know what a BCM - body control module is ? The driver an passanger door lock switch's are just inputs to the BCM , low voltage inputs. The park neutral switch is also an input to the BCM ,that part is working - taking out of park an into park - locks & an unlocks the doors . The door switches inputs are missing ,probably . Bad ground at G302 or open in wiring . Check the flex boot from the body to the doors - Wire's like to break inside . Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size . Under system click on body & accesories ,then under subsystem click on power door locks .
With just the switches not working i wouldn't think that the BCM was the problem , but you never know . Did you disconnect the battery to clean the corrosion ? Sometimes disconnecting batteries can cause electronic modules to act up ,if you know what i mean .
Battery Disconnect or Replacement Problems