Thread: Transform a Nuvi 37xx in a Nuvi 34xx for dummies

I suppose that you've already done this test on several different days and then have sure that it is not an occasional problem. So let's try to diagnose it: which vehicular cable that you are using? (GTM??). If is the GTM26 or 36 with signature jetmouse (unofficial), sorry but not going to work.
Another possibility to isolate the problem: you have tried a different cable, or use your cable in another gps? If yes, which?
Finally, it would be desirable if you can post screenshots of Traffic Receiver Status, T. Receiver Subscriptions and Traffic Receiver Providers, but with properly attached GTMxx cable to vehicle and gps (these screens are hidden on Diagnostics Page/Developer Info, accessible by pressing and holding the upper right corner of the screen Volume).