Does my gps need an i2c connection

Hardware Pixhawk family
1

my gps is connected to both the 12c and gps ports of the pixhawk and i need the i2c for a pitot tube that we recently bought. can i safely unplug the gps from i2c since it is already connected to gps port on pixhawk? or am i forced to buy an i2c splitter

2

GPS does not use i2c, what uses i2c is the magnetometer inside the gps enclosure. So you can safely disconnect it if you don’t use the magnetometer inside gps.

3

any other way or parameter change that we use of i2c
and there we assign CAN port for for airspeed sensors

4

Just use an I2C splitter.

You can’t modify an I2C port to magically use CAN hardware or vice versa. The hardware requirements are quite different.