I did remove the trim. I wanted the texture removed from the grill surfaces and its been my experience that you will get "bleed by" with tape alone. The trim has tabs that run through the grill and are heat staked in place - 7 tabs on the lower (2), 9 on the upper trim since its longer. I used a Dremel to just barely cut through the stake marks. This leaves enough of the tab for remounting; pop them back on after paint, and apply 3M 2 part epoxy for plastic to each of the tabs.