I have an 01 Excursion. I had a weak battery so I opted to just replace both. It was to the point it wouldn't turn over. So i bought 2 new batteries. Pulled the old one out and put the new ones in. Went to start it and it turns over but won't start. The Theft flight is flashing fast. So I am not sure where to begin since I don't know to much about this thing. Advice and suggestions appreciated.
Thanks
Doug
Thanks
Doug