Are You Able To Change The Location Where You Book A Rental Car?

Depends on the kind of reservation you made. Here's what their policies are:

Name Your Own Price® Reservations:

Changes cannot be made for Name Your Own Price® purchases.

 

Published Price reservations:

Changes can be made to reservations where the price and the rental partner were displayed to you prior to purchase. Please visit the Check Your Request section on the priceline home page to see what options are available specific to your rental car booking.

Please note: If you have not yet made a reservation and expect that you may need to make changes, we suggest that you choose a Published Price reservation that allows you to choose the exact rate and partner, rather than using priceline's Name Your Own Price® service. The policies surrounding our Name Your Own Price® service are less flexible than if you were to choose your exact rate and rental car company.

You will need to contact Priceline customer service in order to see if you reservation can be changed.  The number is 1-877-850-9658.  Keep in mind that there may be a fee for changing.