Dec 30, 2007 · The “Allison” transmissions haven’t been made be Allison for a while now, the 10-speed isn’t unique in that regard. The Allison that is in the GM trucks were never actually built by Allison …

Jan 26, 2005 · I was wondering just how good the 6.6 Duramax and Allison Transmission really are? I am thinking about buying a 2005 GMC 2500HD Crew Cab 4x4 but I am looking for some input from …

Dec 23, 2011 · Lastly, there seems to be better availability of used '08+ 4WD-version Allison transmissions, there is of '08+ 4WD-version 6L90s (which is surprising to me). I assume that …

Nov 21, 2004 · The Allison 3000 RDS close-ratio six-speed automatic transmission becomes the base transmission on C8500 models and is available on C6500 and C75000 models. A number of other …

Feb 5, 2006 · The diesel and gas transmissions are the same except for the torque converter. However, the transmission in the LBZ has a lot of improvements compared to the MY03 and is designed to …

Sep 13, 2015 · Anyone ever buy a NEW Allison from GM or an Allison dealer and have it installed? What was the cost? And...if you currently have a 5 speed can you upgrade to a 6 speed?

Apr 14, 2018 · First off, don't bother trying to link me to any other tranny fluid threads.. I've already looked through them, and can't find what I need to know. 2006 LBZ with the 6 speed Alli. Has …

Mar 18, 2011 · Vehicle: 2011 Chevy Silverado 3500HD Hi Folks, Hope you're all doing well. Just a couple questions regarding the Allison 6 Speed Transmission: 1) What will the fluid temperature be …

Oct 17, 2006 · There are also many transmissions that can be bolted right up to the 6.2 in trucks that came with an automatic. For example, I retrofitted my truck with a five speed manual.

Aug 5, 2009 · Allison has established serial number cut off’s for use of DEX VI (S/N 63 1 0670488 and up for Indianapolis built transmissions, AND... S/N 63 2 0784373 and up for Baltimore built …