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Weird Smarty situation (kinda long)

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Old 03-21-2008, 05:10 PM
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No uconnect. Unhooked the batteries for about 30 min. but it did nothing. I'm taking it in Mon. morning to the dealer. I hope I don't get reamed! Thank you for all of your help, vzdude. I'm lost on anything else to do.
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Old 03-21-2008, 06:26 PM
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Yeah....gonna have to have a Starscan to get more information. Good luck, and make sure to keep us up to date!
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Old 03-21-2008, 06:39 PM
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Ok, will do.
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Old 03-21-2008, 10:15 PM
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What dealer are you taking it to? Bossier?
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Old 03-22-2008, 12:37 AM
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Which one in our area is best to take it to?
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Old 03-22-2008, 02:00 PM
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Well, I fix it for the most part by putting a fuse in all the 'spare' locations that have metals tabs in them & diconnecting the batteries for 3 hrs. The only thing NOT working now is the overhead, it won't light up at all. Still had the U0121 DTC but erased it w/the Smarty & so far it hasn't came back. I wonder what's up w/the overhead now?
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Old 03-22-2008, 02:43 PM
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Fuse #23 runs the overhead control module. Everything else has the info sent to it over the bus. Wierd, because it does get some info from the antilock brake module as well.......That could be causing the bus problem, but if it had a bus problem, it should say that in the odo screen too. Check the fuse, and we'll go from there.
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Old 03-22-2008, 04:48 PM
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I tell you what vzdude, if you ever come to Texas you have free room & board on me! I'm gonna go check it & respond back.
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Old 03-22-2008, 05:29 PM
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#23 is good. I stilll have an appointment @ the dearlership Mon. so I guess I'll see what they can come up with.
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Old 03-22-2008, 05:31 PM
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Bummer! Definately let us know what you find out!
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Old 03-23-2008, 03:35 AM
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Will do, C'muon!!!!!!!!!!!!
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Old 03-24-2008, 04:38 PM
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Well, took to the dealer today & they said the computer(ECM?) turned the overhead off. Don't know how but it was turned off when they hooked it up to their scanner. EVERYTHING works now! I don't know what the hay happened but it sure freaked out. Thanks for yall's help!
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Old 03-24-2008, 04:59 PM
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Awesome thread. You guys rock! I woulda been seriously freaking out too if it wasn't for the resources here to keep the calm.
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Old 03-24-2008, 06:11 PM
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Good deal! Easy fix it sounds like. IIRC, the TIPM would be the one that could turn the overhead on or off though, but hey...........it's all good now!
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Old 08-07-2008, 02:24 AM
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The TIPM would turn off the overhead display (along with all of the other accessory circuits) as part of it's function to protect the starting (sic) battery from excessive drain?

A VSS code (can't recall the XXXX at the moment) could understandably accompany the UO121 DTC, but why does the Smarty show PC121 - instead of PXXXX?
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