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12-03-2007, 03:55 AM
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Hummer Veteran
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Join Date: Oct 2005
Location: Connecticut
Posts: 232
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compressor gone haywire
I know its common...luckily i heard it running as i walked away or I'd be stuck in CT...
I yanked the fuse to keep it from killing my batt...is it safe to drive this way?
Or will my ass start saggin or something?
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12-03-2007, 04:15 AM
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Banned
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Join Date: Feb 2005
Location: Westwwod, CA.
Posts: 2,501
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Re: compressor gone haywire
I'm guessing that you know that it's normal for the system to level off after you shut down the engine. It will click for a while and then stop on its own.
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12-03-2007, 05:12 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: compressor gone haywire
If the compressor keeps running and you pull the fuse, its ok to drive but if the rear sags, install the fuse and air up the bags. I would check the air susp relay have seen many stick on and cause the compressor to run continous even with key off.
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12-03-2007, 03:54 PM
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Hummer Veteran
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Join Date: Oct 2005
Location: Connecticut
Posts: 232
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Re: compressor gone haywire
yeah its not the "ticking"...im used to that!
where is this relay? im sure its an easy fix that shouldnt cost mewhatever the dealer's gonna charge!
thanks.
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12-03-2007, 08:30 PM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: compressor gone haywire
depends what year h2 you have 03-04 was on the inside of left framerail right by the firewall. Newer model they were relocated to the top of the pcm cover I think, havent seen one in awhile.
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12-04-2007, 01:00 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: compressor gone haywire
Actually the calibration update for the module was for excessive cycling, not compressor run on and you can only flash the modules on the older single stage compressor units. If you attempt a reflash on the newer 2 stage units you will kill the module.
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12-04-2007, 06:21 AM
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Hummer Veteran
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Join Date: Oct 2005
Location: Connecticut
Posts: 232
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Re: compressor gone haywire
thanks for the feedback
she's an '03...at the shop...
we'll see what they "come up" with
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12-04-2007, 02:50 PM
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Hummer Veteran
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Join Date: Oct 2005
Location: Connecticut
Posts: 232
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Re: compressor gone haywire
$350 to "reprogram the module & to replace the sensor"
whaddya think on the BS meter?
EDIT: also found needs new front right hub...$900
weeeeeee!
Last edited by orlasttoy : 12-04-2007 at 02:55 PM.
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12-04-2007, 08:13 PM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: compressor gone haywire
If the compressor was running with key off the reprogram will not correct this issue. What codes were stored in the module for them to come to this conclusion they should be documented on the repair order. May have had more than one problem but i still think you are going to need a relay to fix the problem of the compressor running with the key off.
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12-05-2007, 12:09 AM
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Hummer Veteran
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Join Date: Mar 2006
Location: Montgomery, Alabama
Posts: 47
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Re: compressor gone haywire
Mine did the same thing. Humtech provided the answer---bad relay. Cost about $35 and 5 minutes. Your relay is on top of the front left frame rail.
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12-06-2007, 12:45 AM
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Hummer Veteran
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Join Date: Oct 2005
Location: Connecticut
Posts: 232
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Re: compressor gone haywire
$35 & 5 mins?!?!?
try $350 & a day!  |
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