Get yourself a Garmin! The portable GPS has several advantages:
It can be moved from car to car
It comes pre-programmed with the continental US & Canada - no CD's to fool with
It can be hooked up to your PC for software or data upgrades - try that with your built in unit.
It can be hooked up to your PC for downloading, backing up, and copying your way-points to another unit if necessary - that with your built in unit.
It is half the price or less of a built in unit
You can upgrade your GPS without having to replace your car
You don't have to take the car or truck to a dealer to get the GPS serviced or updated
The major disadvantage I see is that the screen is smaller but the GPS takes care of that by automatically changing map resolution as you get closer to turns, etc.
One thing I can promise - once you start using one of these things, you will wonder how you got along as well as you did for as long as you did without it.
It can be moved from car to car
It comes pre-programmed with the continental US & Canada - no CD's to fool with
It can be hooked up to your PC for software or data upgrades - try that with your built in unit.
It can be hooked up to your PC for downloading, backing up, and copying your way-points to another unit if necessary - that with your built in unit.
It is half the price or less of a built in unit
You can upgrade your GPS without having to replace your car
You don't have to take the car or truck to a dealer to get the GPS serviced or updated
The major disadvantage I see is that the screen is smaller but the GPS takes care of that by automatically changing map resolution as you get closer to turns, etc.
One thing I can promise - once you start using one of these things, you will wonder how you got along as well as you did for as long as you did without it.