wiggle it up and down really hard. the first time taking it off is always a bitch. but dont worry toyota didnt superglue it on. just work at it and it will come off, keep in mind, the radiator hose is also connect to it. there is a little clip on the backside of the hose.
*2003 Black GT-S 6speed* TRD body kit, HID upgrade, clear corners, Matrix XRS shift knob, 02 tails, trd exhaust, AEM gen 2 CAI, TWM short shifter.