My front driver side window wont move,sometimes it works and just stops working again for months at a time. From what ive read the window motor is a common issue for my 2003 g35 , wondering what a fair price to pay for the install if I bring the part.

found it on rock auto
http://www.cardone.com/Products/Prod...p=rock&jsn=333

also a remanufactured that says its more reliable, not sure about this.
http://www.cardone.com/Products/Prod...p=rock&jsn=326

 

Start by troubleshooting the motor to verify you have voltage and ground, do the troubleshoot when it's not working obviously. I've seen too many pinched/worn/broken wires in the door to ever blindly replace a $100 (or more) window motor without verifying that it is indeed the motor that failed.

Prices I've seen for our window motor is ~$120 for a rebuild or ~$180 for new.

 

I replaced my window motor about a year ago. The part was 100 from rockauto. I did the install myself it's fairly simple.