Van, didn't see anything. Apparently they don't publish a local list, at least not that I can see. Guessing that since the Hummer's don't show on any of the National list that it isn't a real threat.

 

Actually RMD my experiences with Onstar have been impressive. I am sure that they have the occasional screw up but I have been impressed. Don't know about Onstar GPS but a GPS unit with a geohelix antenna will work just fine indoors. In fact my Map60 csx works perfectly downstairs, in the car, in my office, etc. I am sure you could bury it far enough that it wouldn't work. I think I'll check with Onstar on that issue.

 

Now that brings up a very good point. I wonder what kind of GPS antenna is on the hummer and where is it located. The antenna on the roof is the XM antenna but has a very broad base which could be housing a patch GPS antenna. Then there is a clear circle on the RH side dash that maybe could be a GPS ant. but also could be a photo cell to operate the automatic lights feature. My H3X came with built in Navigation system, although i have not had time to learn how to use it yet, so i know it also has to have a GPS antenna, but may be sharing an antenna with OnStar. I also have the Garmin Map60csx, and it is awesome, but it gets its superior performance from the SirfIII chip inside, not the helix-coil antenna. The older 60 cs had the very same antenna but the older chip and it had sorry reception under cover. But my csx gets reception in my house, but can be buried deep enough to get no recetion at all. (Like in my glove box) - As for OnStar, happy to hear someone with good luck.

 

I have the nav from the factory on my H3 and I love it. The onstar is great, I have had nothing but good service and they have been very helpful at all times.

 

My H3 has stolen my heart and soul

 

if you are worried about it just drive around with a 1/4 tank of gas... they won't get far...

 

That's funny

 

The H3s also have the chip in your car key so they need that to get the car started.

 

[sm=hail.gif]and you won't get the full tank tilt.

 

I thought that we established that the key doesn't have a transponder in it? Many users on here stated that they are using Hardware Store cut keys with now problems? Maybe the newer 08's do? I know neither one of mine have one.