I think it is the wrong one you can have it reprogrammed at the dealer, also
Im not sure but I think it is FOB not BOB.

Are you talking about the remote entry units?
I just purchased a "used" 2004 Malibu Classic.  I was given 2 keys.  One had
the alarm remote door open 'bob' and the second key bob was handed to me
later.  It seems the second one does not work.  Both have the number 1
stamped on the back.  The salesman said he thought I should have a 1 and a 2
stamped bob.  I have tried replacing the battery.  The owners manual is not
clear on any kind of "programming" procedure.  Do I have a wrong bob or an
unprogrammed bob?  Or what?
Help.