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Old 09-26-2012, 04:35 PM   #1
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Allison 2000 in C4500

Hello- New to irv2. I have a question about Allison MDT truck transmission.

My c4500 was sitting in the garage for about 10 days. I went out, started it up and drove to town but it seems like its not shifting into OD. Running about 3krpm at 60mph. Not a transmission man so I thought maybe to ask what the folks on here thought. No overheat on gauges so maybe next thing talk to Allison???

Thanks, Dave
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Old 09-26-2012, 05:38 PM   #2
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Have you check to make sure the OD button on dash is on?
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Old 09-27-2012, 02:58 PM   #3
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I can't seem to find an "OD" button on the dash. What am I looking for?? In this 2004 version there doesn't seem to be one. Help

Dave
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Old 09-27-2012, 03:13 PM   #4
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Look on the end of the shift handle or their could be a toggle switch on the dash.
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Old 09-27-2012, 04:53 PM   #5
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Thank you for the reply. I had asked the same question on another forum and you folks here and the other folks gave me the help I needed. My c4500 version has the front/back-up/down switches for the rear seat in that location. I have several other switches on a aux. panel to the right of my Kenwood system and there it was. I had the dash tore apart so the tech could repair a problem with the radio and GPS and maybe he hit the switch because old man me didn't see it until you folks and the folks on the other forum showed me where to look and what to look for. Thank you all.

Dave
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Old 09-27-2012, 05:55 PM   #6
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Howdy!

If you haven't already you may want to go to "The dieselplace forum for GM MDT's.
I had a C5500 and used the site and link below daily.


http:// http://www.dieselplace.com/forum/forumdisplay.php?daysprune=&f=34

"Happy Trails"
Chiefneon
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