P0343 code

[rwolf9653]

I scanned my 2003 Suburban 6.0 for a check engine light and got this:

P0343 Camshaft Position Sensor A, Bank 1

I have two questions though:

1. Which side is this? Passenger or driver?

2. I take it that there is one sensor for each cam, so would it be cost effective to just change them both as a just in case?

I have searched the web and found about 75% say it is passenger side, and 25% say it is drivers side. I am better with points than I am sensors and ECM's.

Thanks