My daughters Tahoe has started draining the battery when sitting for 3 or 4 days. I checked the draw on the battery when everything is off and it draws about 200 mA when the vehicle is locked and about 65 mA if left unlocked. All of the draw except about 7 mA is through the TBC fuse which is for the keyless entry and body control module. What I want to know is if this amount of draw is normal or too high.
They disconnected the battery for a week and it held its charge with no problem, but when hooked up, it lasts only a day or so.

Thanks in advance

It is to much draw.
Strange on the unlocked and locked draw.
Check and see if you can find a relay for lock and unlock.
What year do you have?

Sorry about not mentioning it. It's an '01. I don't have a service manual of any type for it. I'll be out looking for a used factory one. Sounds like time for a trip to Ebay.
If I were to guess, I'd think the difference in the draw was due to the security system armed when it was locked. Still seemed like a lot of draw to me. Now to figure out why.

thanks,
Torqued

10-4 on e bay.
Also public Libraries have a lot of repair info.
Run a google search.
And also. 24.95$ us a year. For a online subscription.
http://www.alldata.com/products/diy/index.html

Is the battery original?

//2000CAYukon

The battery is a little less than 3 years old. They used to drive it daily and never had a problem. Now they both drive cars to work and this raised its ugly head since the Tahoe sits for a week at a time.

Thanks,
Torqued

had a friend who had the same problem with the battery draining over one or two days if he didn't drive the truck. He fought the problem for about a month before he happened to go out to his truck late at night and noticed that one of the vanity mirrors [sun visor] was on. He opened the truck, the mirror door had come dislodged and wasn't closing the switch. He was sooo happy because he was fixin to pay for an electronic check to find the reason for his battery drain.......Gil in Tex

I have two possible solutions for you. My buddy's 03 does this and he found out he cannot lock with the remote. Try just locking with the button on door for a few days. It turned out the factory alarm system was shorting.
Now I had the same problem on my 01. I checked all circuits and could not find any draw on any fuse that was not normal. Tured out it was a shorted cell in my 1 year old battery. Just started all of a sudden. I would look into that first.

My daughters Tahoe has started draining the battery when sitting for 3 or 4 days. I checked the draw on the battery when everything is off and it draws about 200 mA when the vehicle is locked and about 65 mA if left unlocked. All of the draw except about 7 mA is through the TBC fuse which is for the keyless entry and body control module. What I want to know is if this amount of draw is normal or too high.
They disconnected the battery for a week and it held its charge with no problem, but when hooked up, it lasts only a day or so.

Thanks in advance

200 mA is probably ok, 50 mA is generally the highest you want, but probably wouldn't cause a dead battery after only a few days. Check for a "case draw". Touch one lead of a voltmeter to one terminal and touch the other lead about 1/2" away from the other terminal, so it's touching the plastic. If it reads near battery voltage, take both terminals off (may as well remove the battery from the truck so you can clean the whole thing), clean them (the battery contact and the cable ends) with a baking soda/water mix and a wire brush (about a cup of baking soda to a gallon of water), then clean the entire battery with the same mix, but use a rag or a nylon brush. Rinse it off with clean water and re-check.

If it does have the case draw, it's basically like having a big resistor across the terminals all the time, which doesn't show up when doing the standard parasitic draw test.

And I forgot to add, make sure the vent caps are on tight, and don't let the baking soda sit on there longer than necessary. Assuming you have the factory side posts, you could avoid the top of the battery if you want.

Oh, and did you check the electrolyte level?


EDIT:
I just re-read your post, and saw the 200mA was with the secutity system on, your numbers are fine where they are. And even if the battery is 3 years old, a lot of the cheap ones will fail in two years or less (once saw a battery 14 months old that was JUNK... We don't generalize brands... but this battery would "neverstart" the car). Load test the battery if my "case draw" idea doesn't fix the problem.

[ Load test the battery if my "case draw" idea doesn't fix the problem.[/QUOTE]

That's what we did when we dicovered my battery to be bad. It was about 9-10 months old. We load tested once and it started to drop off. By the start of the second load test (about 5 min later) we had it smoking. I took it back and got a replacement under warranty and it's been fine for close to 2 years now. By the way it was a Optima red top battery.