I have been trying to remove the battery from my 2004 Monte Carlo SS with little to no success. I can take off the support bar above the battery and I even got the positive and negative terminals off, but when it comes to the little battery holder bolt, it just won't come off. I tried a normal torque wrench, my impact gun, and PB blaster. It just won't budge. I saw some videos on YouTube and it seems like I'm doing it right but it still won't come off. Am I missing something here? has anyone else run into this issue?