Destroked - buy 5 speed controller and use Suncoast or Socal Diesel 6 speed upgrade
Fleece - same as above
Howards Allison - only true Allison six speed unit for original 1000,2000,2400 six speed models - Allison TCU is hard tuned
Allison doesn't make an 18 speed transmission.
allison 1000 if it is before 2006 (5 speed). in 2006 they switched to the 6 speed allison 2000
It shifts itself.
It should have a 6 speed Transmission.
Allison 5 speed
Allison B500 6 speed
Official word is no, You need to calibrate for a 6 speed, Hard to get the GM dealer to agree to it. Allisontech
It is a 4L85E transmission. The 4L85E is GM built, not allison, 4 speed automatic transmission.
The three sensors are [input sensors] that are wired to the Transmission Controller to give speed information to the Controller for proper shift points,[up-shifts-down shifts Input Turbine Speed.... Output Turbine Speed.. Vehicle Speed sensor...
AnswerThe Allison 1000 Automatic Transmission Automatic Transmission, 5 speed 1000 Initial Fill is 7.4 quarts[2] Automatic Transmission, 5 speed 1000 Total Fill is 13.0 quarts.DO NOT drain the fluid if only the transmission spin-on oil filter is being replaced.
There are two possible transmission that can be found in a 2001 Chevy Silverado 2500HD. The most common transmission is an Allison five-speed automatic transmission, which was meant for lighter workloads. However, the ZF six-speed manual transmission was also introduced as an option for heavier workloads.
If you're talking about the transmission, one with a split range, twin countershaft transmission will have one (9 speed, 10 speed) or two (8LL, 13 speed, 15 speed, 18 speed) auxiliary gearboxes. Trucks with something like an Allison auto will not.