Not sure if it's the same in the Pacifica but my Durango also has dust covers in the wheel well that makes getting to the bulbs easier. You have to turn the wheel inward to see em.
Do you notice any flickering in your new GTR Ultra 2s? I see they sell an anti-flickering kit, but not sure it's required. Some RU-vidrs show their GTRs flickering w/o it when replacing halogen.
I haven’t noticed ANY flickering. With this particular kit, granted I don’t regularly drive this vehicle. This is my wife’s DD and she hasn’t brought up any issues regarding the headlights since they’ve been changed, other than the fact is 100 times better. What specific Pacifica are you in? This one is a 2018 Touring L Plus for what it’s worth.