Question about 2006 Hummer H3

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My hummer when I turn off the vehicle the p light is lite in a sec. or two it will move over to the 3rd gear mark and the radio comes on and the dome light also the doors unlock this keeps running my battery down it does not happen all the time but when it does it seems to keep happening for a week or two and them goes away been to the dealership and it will not happen what could be causing this?

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The drains are plugged or the drain tube is disconnected on the passengers side allowing water to run down the passenger side pillar or out the disconnected tube and the bcm is there in behind kick panel. Body control module. Try drying it out with forced air and maybe even heat. If no luck after that try hooking battery cable for a bit to reset as well. If nothing try the dealer and mentioned. The bcm and may be the problem. I have an 06 h3 and have had troubles with the sunroof drains before. I joined a drum and learned the cure.
My hummer when I turn off the vehicle the p light  - 1_14_2013_3_50_18_pm.jpg

Posted on Jan 14, 2013


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Posted on Jan 02, 2017

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SOURCE: service air suspension

Your airbags probably have an air leak or are just starting to crack. Go to you tube and type in Suncore hummer suspension air bag replacement. They have a whole how to install that also show your suspension and how it fails

Posted on Mar 13, 2009

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SOURCE: 2005 Hummer H2 battery went down and when I

if it is the factory alarm you will have to do a relearn. G.M. uses a couple different ways to do the relearn and I would think it would be the same for hummer. turn off all acc and then turn the key to the on position wait 10 minutes you will see the light on the dash flash and go out . asap turn the key to off to on 3 times quickly and the third time leave it on on again do this 3 times for 30 minutes then after the final turning of the key 3 times on the 4th time start the car. so turn off all acc like radio , a/c ect then turn key to on in 10 minutes the light on dash will flash and go out quickly turn key from off to on 3 times and once again leave on on do that 3x for 30 minutes then start the car. that is the gm relearn for security they have one on some models that start after 10 minutes but that is usualy on the cheaper cars so just do the 30 minute.

Posted on Jun 04, 2009

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SOURCE: The power battery light stay on when I turn off the engine off

I had the same problem, Youl need to do one of the following, Change the eginition module or change the driver side control pannael the one for the window/locks (if you can crank the key a bit when its turned off it may help sometimes) sometimes a bit of rain comes in the window and down into the control (locks/window switch) and shorts it out. Trust me I spent time and money to figure out its that or your egnition module. EBAY for the parts it will only cost $100

Posted on Aug 05, 2009

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the next time you do get it out,take the key to any hardwear store that makes key's,have them make a dupe if they have a blank,so you have a copy,then have them run your key on there wire brush to smoth all the sharp edges,if it still sticks, then replace the ignition sylinder. good luck

Posted on Dec 20, 2009

  • 33 Answers

SOURCE: Alarm goes off by its self, dome light comes on by its self

I read a service bulletin about door ajar light and power locks cycling while driving which i assume might actuate dome light as well.... rec. fix per service bulletin adjust "swing gate " striker

Good Luck

Posted on Feb 19, 2010

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Alarm goes off by its self, dome light comes on by its self

I read a service bulletin about door ajar light and power locks cycling while driving which i assume might actuate dome light as well.... rec. fix per service bulletin adjust "swing gate " striker

Good Luck

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