TRUCK KEEPS DYING EVERY OTHER WEEK

[timgco]

my 07 had an issue with the factory stereo/NAV drawing power and also had something to do with the drsd seat module at the same time. I lookd though my service records but could not find that exact information.

...and yes, there have been pleanty of us that have replaced the factory battery due to bad cell.

[HUMTECH]

Is your onstar activated. I have run into issues with onstar when its not activated the module wakes up periodically and searches for a signal, when it cant find one it stays awake and keeps searching. I have also had a few radios that stay powered up, even though they look off, they are still drawing around 200mA when staying "awake". Very intermittant.

[HUMMERICH23]

I have activated my OnStar but i am really thinking it has something to do with radio or Nav. They are going to keep the truck one more day and do the amp test again over night for the third time. They said this time they will actually drive it around and then pull it in and hook up the equipment and see if there is anything. I know they truck has just sat in the bay without being driven or locked so i wonder if they should lock it thereby enabling the alarm system and see if there is a drain there. Just thought of that and hope they would be smart enough to do that.


Richard.

[HUMTECH]

They should try exactly that. Always need to duplicate a typical drive cycle the owner goes through to check for intermittant problems for sure. They should hook up a disconnect switch between the neg cable and battery. Close the switch and drive it using all accessories at least once. Then hook up the amp meter across the disconnect switch, once that is all done open the switch to allow all current flow to travel through the meter without actually removing power from the truck and all the modules.

[HUMMERICH23]

Dam that sounds good. I am going to tell them that exact method!!!

[Rene S. Nielsen]

Hi Richard

You say that when your truck won't start you have no problem running all you other eletronics. No dimming light or anything.

Then my guess is that you have the famous ignition problem.

Try and use the search function there where a very good right up on finding this error (and how to start you truck when this happens).

If you have lights it's not your battery.

Ignition problems can come and go until it fail completly.

Regards
Rene

[HUMTECH]

Missed the part where ya said all accessories still worked, i agree ignition switch or starter. when it happens to not start check to see if the starter relay clicks, if it doesn't problem is between ign switch and relay most likely ign switch. If the relay does click check for power at the starter, if you have power at the starter, ya need a starter.