TRUCK KEEPS DYING EVERY OTHER WEEK

[HUMMERICH23]

I called my Tech at Hummer today and told everything you guys have said and he said only the one about the onstar coming on sounds legit and that i wouldnt have a battery problem if it was the ignition or starter. I told him to look into it but he said that was the least plausible cause which i think now is the most plausible and said that is not a road to go down and said why was the battery low if that was the problem.


The more i think about it, the 4 or 5 times it has died, every single time i first used the remote start and nothing would happen and then go to start the truck manually and it is dead, not clicking, no turning over of starter untill a quick jump. I just remembered that pattern with the remote start and wonder if it has something to do with the starter/ignition in that way. The only thing i dont understand is why would jumping it make it start if it was an ignition problem. I think ill try starting it everytime now with the remote too see if that drains it or see what happens.

Richard

[HUMTECH]

Check behind the dlc(data link connector) for a wire spliced into the data line(purple wire). If there is a splice into that line the next time it wont start disconnect the splice and try to start the truck after key has been off for at least 10 minutes. Its possible the remote start is sending a feedback voltage into the class2 data line which will cause all sorts of problems including a no start

[Tones H3]

Just out of curiosity does your h2 have an aftermarket radio/nav? I have had the exact same issues in my 06 h2 ....After a couple of months of the same crap you are going through, we finally isolated it down to the radio harness..It had a parasitic draw that was killing my battery...Just a heads up to anyone who is having the same issues with an aftermarket radio or nav.

[HUMMERICH23]

I do not have an after market radio. Also I will do what you told me to HummerTech next time it dies. She has been very good but i know its coming. I copied your posts to me and sent them in an email to my Hummer Maintenance manager and he was pretty impressed with your knowledge. Where you located in Canada? If i cant get this fn figured out i am driving up to you.

Richard

[HUMTECH]

Im in Calgary Alberta

[HUMMERICH23]

A little too far for me, but i did have my PCM sent to TILLEY ALBERTA for a Westers Hot tune so i guess part of my truck has been up by you!!! Ever deal with them?

[HUMTECH]

Ive talked to him through email about doin my pcm in my SS Trailblazer but havent had it done yet. Probably will this spring sometime

[HUMMERICH23]

WELL SHE DIED ON ME AGAIN this morning while i was going the closing of my new house (not very pleased and let the dealership know). This time i drove it the night before with no problems at 11pm. Went out to start it 7am today and it was flat DEAD. Lights barely even had a glow to them, this is the deadest its been.

Made a list of the things you guys have told me, printed them off and gave them to the service manager. Also got the manager of the dealership involved who has been a great help/friend since i bought our first Hummer two years ago and we talked for a while. I told them i wouldn?t even bring it in until they at least knew what the Fk they were going to do. They had it 4 days last week and couldn?t come up with crap. That really pisses me off. I told them i went on Google for 5 mins and got a laundry list of things along with what you guys told me and they had it 4 days and did shiiitttt.

They are leaning towards OnStar running at night and will pursue that tomorrow. I got a question for HumTech or anyone who might know; Do you guys think any of this had to do with my Hot Tune on my PCM and would that mess up the idle levels or how the pcm controlled the alternator etc. That is the only thing i could think that might be a reason for this, but like i said i have had the tune Since June and now 8-9 months later why would it cause this. I just wanted to know for sure if they give me crap for having a tune and blame that i can say it has nothing to do with what?s going on.



Richard

[[__--MUD--__]]

You know if your onstar was upgraded to the newer system?

For those that still have the old units, like myself... What are they doing now that the network is unreachable? Even if they are not activated and not getting signal, could they be continously trying to connect to the network? Cell phones w/ low signal, crank up the power to try to get signal..

I would kill for a device I could plug inline to my battery that would log the draw at say 5 minute intervals. So i when i have a dead battery i could go back at see what the draw was over a time period.

I live right next door to my office, so i dont drive alot, truck usually sits from friday-monday. I keep my tools in it, so i'm getting in it maybe 5-10 times over the weekend. I need to check what the draw is when I open the doors. I know when I first hook up the battery, its about 7amps.