Hello all, I have a 1999 Silverado 1500 LS 4x4 (New Body Style). A new problem has presented itself over the last few of months. When the truck sits for a day or two at a time, the battery is drained. I didn't worry about it too much in the summer because 9 out of 10 days I would ride the motorcycle. Now that it is below freezing, it's becoming a problem. I've done some preliminary testing... - Put the truck on a Battery Tender and took the long way to and from work a couple days to make sure the batter had a full charge - Took the battery to AutoZone and had it tested. It is only 2 years old and it tested as strong. - Pulled out my multi-meter and put it in series with the positive terminal on the battery. I expected a slight load (maybe .10 or less for radio memory and a radar detector), but it is pulling between 2.5 and 8 amps. - Narrowed it down to a single fuse under the hood. The fuse is labeled TBC. I called the two GM factory service departments in town and they were no help. First one said I would have to make an appointment and the second told me it had something to do with traction control. I pulled the fuse and the truck will no unlock with remotes or start. Also, with the fuse out, the security light stays on the display. I'm going to assume it has something to do with either the remotes or the security features of the truck. Does anyone have any additional information on this and what the possible root cause is? I'd like to get it solved before it really gets cold since it turns over slowly after one cold night. I've been driving it daily but it is still sluggish to start in the mornings. Thanks in advance.