I can't get my Power Pup to power up when I plug it into my OBD-II port. I called bully dog last week about this and they sent me a new unit out, no questions asked. But this didn’t solve my problem. I called them again today and informed them that it still wasn't working, so they told me to plug it into a different vehicle to see if it would power up. I plugged it into my dads 2002 Chevy van and it came right on. I've checked my fuses, but they told me to check my OBD-II fuse, which I can't seem to find. They said it had to be a loose wire or a blown fuse, but everything looks fine. My main concern is that if I have to take my truck in for an unexpected service, how I am supposed to get the program off of the truck. It's stuck on the 75hp tune right now.

Cig Lighter fuse in underhood fuse block, suprised Bully Dog didn't know this...

Powered right up. thanks max payne.

Same thing happened with my Predator when I got it. They use the cig lighter power.

Ok, so I have borrowed a Predator from Craig at Macs Performance, it is an LB7 unit but all I want to do is check the balance rates. He tried it out and it works on an LLY truck. The unit will not power up. I have checked the cig. fuse and it is good. I don't know what else there is to check. Any ideas anyone?

With the power pup installed on my truck it would lock doors if I got out and shut the door while the engine was running. On star could not help me either. All went back to normal when returned to stock