How can I remove these 2 hidden 10mil bolts to the oil pan behind the gearbox

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. I am not certain what sensor you are working with, P0336 doesn't come up for a Chrysler Pacifica. Looking up a generic P0336, it looks like a code related to a crankshaft position sensor and its circuit. Keep in mind that this code does not say the sensor has failed, and replacing it will probably yield no positive benefit. As you have already gone down this road and have snapped fasteners, it sounds like a difficult situation. Unfortunately, access to bolts are not something that has a "trick" and I would imagine that no one there could visualize the bolts anyway. Sadly, the only option may be to remove the gearbox. I'd strongly recommend engaging a hands on shop near you where you can get some real world first hand visual advice. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.