I am sorry I do not have a direct answer for you about the bulb used as I have not had my Vibe controller apart. A general answer is that most newer vehicles use bulbs for the heater controls that are referred to as "grain of rice" bulbs. I had a Mercury Villager (Nissan Quest) that had about half the bulbs out in the heater control panel. Mercury does not sell replacement bulbs and had no listing for the bulb. I found out that most car manufacturers do not list these lamps for replacement parts. Ford would sell me a new controller that had new bulbs in it for over $400.00 but no information on the bulbs in the controller. Digging around as I work on electronic equipment, I found that Mouser Electronics Inc had a bulb that worked perfect in the Villager heat controller. Here is link to that bulb:
http://www.mouser.com/ProductDetail/JKL ... Shg2mjU%3d
On that page if you click on the "Data Sheet", you will get the size and dimensions for the bulb holder. This is called a Neo-Wedge T-1 base lamp. Another bulb they have is the Neo-Wedge T-1 1/4 base lamp, which can be found here:
http://www.mouser.com/ProductDetail/JKL ... Ik5g%3d%3d.
Once again check the size, as the second bulb is a little bigger then the one that fit my Villager. These are common lamps used by a lot of vehicle manufactures for these assemblies. I had also heard that Toyota sells these bulbs at the dealership for around $9.00 each. "I found a exact replacement bulb and socket at a Toyota dealer. the part # is 84999-10310" and "I removed the bulbs from the plastic sockets and replaced them with Radio Shack #7219 Micro Lamps (12 Volts 60ma Wire terminal base)" was reply's I found about the Villager lamps. At the Mouser price, I just bought 10 for $0.59 each and replaced all the bulbs in the controller when I had it apart (8 bulbs) and never deal with it again. I hope this gives you some info to work with or some ideas to try like the Radio Shack bulbs. Good luck