I have a 8700G and a Dell Bluetooth GPS (Model BT-309). I use this GPS with my Axim just fine.

I installed BB Maps and now trying to pair the GPS to the BB.

I turn the GPS on, wait a couple minutes, then turn on BT on BB and click "Add Device".

The BB searches and finds a "BT-GPS-01DD8F"
I click on it and it wants a passkey.

The passkey is NOT 0000. Infact Dell tells me there is no passkey. On my Axim I did not have to enter a passkey (nor on my laptop either). Why does the BB ask for a passkey that does not exist?

For more info on the Dell GPS
Dell Bluetooth GPS Review

It's common knowledge that Dell mostly sells rebranded peripherals, and that holds true here--the Dell Bluetooth GPS receiver is actually a rebranded DConnex DC-0103 in a new case.

After more research on the DConnex DC-0103 I found the Passkey is 2003.
Hopefully this post will help others.

I am using a Holux GR 231 and it works well with my BlackBerry.

I found it through: BlackBerryInsight » Recommended Bluetooth GPS Receivers