oil change on 2002 Chevrolet Venture

is there a code required when changing the oil that will disconnect the oil light

2 answers
Push the tripometer button enough times to get to the oil section--then hold down on it until it goes back to 100--it may not be the manual way, but it works
No, there's a procedure to reset that light after the oil change, but it's kind of complicated and has a bunch of strange steps. It should be included in a repair manual:

http://bit.ly/autozone_repair_info
http://bit.ly/alldata_repair_manuals 
http://bit.ly/mitchell_repair_manuals_online
http://bit.ly/Bentley_Repair_Manuals