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sray1
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Post subject: Allison 6 Speed Transmission  Posted: Mon Dec 31, 2007 6:32 pm |
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Joined: Tue Nov 27, 2007 8:54 pm
Posts: 10
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I have a 2007 6.6L LMM and a 2808 tuner.
Has anyone experienced where you stop and start to put it in park or reverse and hear a clank in the transmission. I put it back to stock and it has not done it since. Any ideas about what this is or if someone else is having the same issue.
Thanks
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RON @ SUPERCHIPS
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Post subject: Posted: Wed Jan 02, 2008 9:09 am |
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Joined: Tue Jul 25, 2006 9:41 am
Posts: 18303
Location: SUPERCHIPS
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Well with the Allison transmissions we do not have any control over the trans. Is the idle rpms high at that point? Also this has not been a complaint that I have heard of either.
Ron
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sray1
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Post subject: Posted: Wed Jan 02, 2008 3:50 pm |
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Joined: Tue Nov 27, 2007 8:54 pm
Posts: 10
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no rpms are not up. Maybe I will take it in and have it checked since your saying the chip does not affect the transmission.
Thanks for the reply
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jlgray22
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Post subject: Posted: Sat Jan 12, 2008 12:40 pm |
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Joined: Sat Nov 17, 2007 5:02 pm
Posts: 6
Location: Simi Valley, CA
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We have the same engine and trans you have. We have the same clank just once in a while, not all the time. I haven't put it back to stock yet but if you find out anything could you let me know
Thxs
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sray1
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Post subject: Posted: Fri Jan 18, 2008 7:30 pm |
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Joined: Tue Nov 27, 2007 8:54 pm
Posts: 10
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I just got my truck back from the dealer. According to them on this model 2500 and 3500 this is normal.
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rennat_2006
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Post subject: Re: Allison 6 Speed Transmission Posted: Fri May 14, 2010 1:11 am |
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Joined: Fri May 14, 2010 12:57 am
Posts: 10
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my 2006 does it also. I believe it has something to do with the parking pawl in the transmission, It is extra beefy to hold the extra weight capacity these trucks are rated for towing wise. Same type of deal if you park your car facing up a hill without putting the ebrake on first before putting it into park.
_________________
2006 Chevy Crewcab Longbed 4wd LLY
Hacked stock airbox, Transgo Jr kit, Banks 4" midpipe for LB7, Straight piped, 285/75/r16 nokian vatiiva's, Torsion bars cranked 1", Banks Dynafact EGT and Boost Gauges, Nerfbars, Ventvisors, Allison deep pan with deep pan filter with suncoast filter lock, Flashpaq tuner for now with EFILIVE and built Allison in the future.
Ex GM Technician
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