BTW, I would like to take this opportunity to bash GM about using this stupid 5202 bulb.
Why choose this stupid bulb? It's not even stocked by Napa, Autozone, Pep-boys, etc...
I didnt want to break one of my stock bulbs to do the test. So I went to the store to pick up a spare for the test. I tried 8 different places. No luck. I dont live in the middle of nowhere either.
The only option is to go to the dealer for this bulb.
I called my brother in law just now (GMC service tech) to pick me up a 5202 from their parts dept. He told me the bulb is a GM only part which is why auto parts stores dont carry it. It's $30/ea. Luckily he's getting a discount on it so it should cost me $20 max.
What a pain...