GPS Project: PIC18F26K22 or PIC18F46K22

[richard]

So what should i add as OSCCON value, as i use and external crystal 16Mhz? How do i specify the OSCCON value for 64Mhz?

nothing , leave it alone

OSCTUNE.6 = 1 ; Enable 4x PLL becomes non functional if CONFIG PLLCFG = ON