Help / Advice with a few issues
 

Driver side, rear, fixed window, upper black gloss trim - won't stay flush (pn 51368257687). It pops out of place. Dealer says the trim and clips need replaced. Looking at realoem.com exploded assy dwg I don't see any clips for the upper piece, just the lower. Has anybody else experienced this? I've already replaced it once thinking that would address the issue, it has not.

Check Engine Light - dealer says faulty fuel tank vent valve. Looks like there is a 30 min DIY posted here and parts are approx $90. Will definitely do this.

Also have a couple broken pieces in the front grille grids. PN 51117130457, 51117130458, and 51117123956. Any experience replacing these?

Thanks in advance.