SpeedMachine

I reinstalled the fuses, returned the ECU to stock. The Yukon runs fine, so I think I lucked out. Thanks for that info! I would have been pissed if I had screwed up my ECU! I redid the Superchips programmer the way you described, and it is working fine, so I am ok there. As for my antenna, I don't know what could have happened unless it just went bad. It was weird that it just happened to happen when I did the programmer. When the program was first installed, and I didn't replace the fuses like i was supposed to, it still worked, it was just reading way faster than it should, which I just

After over 100 miles and 2 days now, still no satellites show up, and no position movement. Any other ideas?

For some reason, I didn't catch when you said to reinstall after programming. I just reprogrammed the ECU with the superchips again, and reinstalled the fuses. I reset the N1 from the front of the case and put it back into sensor initializing mode. I still don't have any sat signal, but it says OK next to the little satellite symbols. We'll see what happens now.

No, you can't have that fuse in while installing the program beacuse the onstar is on. The superchips doesn't work, read or program with the onstar working. Fuse came out to program, was out while using program, and went in after I returned the ecu back to stock.

No, I re-installed the SEOB1 fuse that powers the Onstar after I returned the ECU back to stock. The Onstar light is green now and appears back in normal operation.

First off, this site is awesome! There is so much good info here for AVIC users. Hopefully you guys and lend a hand with my situation. I have an 02 GMC Yukon XL with an N1 in it. The unit was installed by Al & Ed's locally, and I have used it for the past year without problems. Everything on it is original with no mods or hacks other than the parking brake being grounded (per my request to watch DVD's while I am moving) About 2 weeks ago, I realized that my superchips programmer that I used to use on my dually works on my Yukon as well. I thought would try to get some better gas m