Allison Transmission Service

[pjp]

I have a 2008 2500HD with a 6.0 and Allison 6 speed transmission. I've noticed a reference on several posts from this web site regarding a "spin on transmission filter" for the Allison. Also, when I was at the dealer yesterday, a service writer asked me if the "spin on transmission filter had been changes at 10,000 as specified". I looked everywhere and can't find an external spin-on transmission filter. Is it hidden somewhere or is there just an internal filter in the pan?

[jro909]

i think its inside the tranny...i know alot of guys that do it themselves so its not too hard...it does take finess

[thearborbarber]

This picture will help. It's the orange canister in the lower left. When you spin it off there is magnet on the top of it that has to be moved onto the new filter. Also be aware that there is a filter in the pan that needs to be serviced at intervals.

 

[pjp]

WOW, that filter would be easy to spot, but mine has nothing like it. Also, my pan isn't tapered like that one it's more flat and has more of a traditional automatic-style bell housing.

[jf781]

I didn't know you could get the gasser with the allison. I thought it was only available with the dmax.

 

The gasser that only come with the 6l90e that I'm aware of and I don't think the 6l90e has an external filter. Just your typical in pan filter.

[pwall]

I agree.....thought the Allison was only matched with the d-max and the 8.1l (which is now gone).

[pjp]

Perhaps it's a new option. I know that there's 6 speeds on the dash and I checked the build sheet and it's listed there too.

[Z45]

The Allison 1000 trans only is available with the diesel engine. You have the AUTOMATIC 6-SPEED HYDRA-MATIC 6L90

 

Check the option label in glove box

 

MW7 Transmission, Allison 1000 6-speed automatic

 

MYD Transmission, 6-speed automatic, heavy-duty

[thearborbarber]

The first couple of years you could get the 8.1 with the allison. I looked at one when I was shopping for my 2001 pickup. About the time they got the 8.1 in the Sub with the 4L80E the allison disappeared from the pickup line with the 8.1

[Silverado4x4]

Right the Allison is not available with the 6.0L motor it was available in the early 2001 8.1L but as said you have the 6L90 trans. Allison only comes in the Duramax diesel now.

[GeeJay]

This dead thread popped up in a Google search for Allison filter part numbers.

 

 

THE ALLISON WAS STANDARD WITH THE VORTECH 8.1L THROUGH 2007 "CLASSIC"

 

I have the brochures to prove it!!

 

Now, if somebody can tell me if they have the shallow or deep pan????o

GJ

[jro909]

check the rpo codes in the glove box man...to my knowledge the allison hasen't been attached to anything but the 8.1

[Webb]

Thearborbarbor said something about a magnet in the top of the filter. I think I made a booboo? I recently changed my tranny filter and just tossed the old one out. Reading that my jaw dropped, because I remember the filter I took off having some kinda magnetic pull to it and the new one didnt. Didnt think much about it at the time. Hope thats not too important? See If I can do some research about getting a new magnet.

[thearborbarber]

There is a magnet on the Allison spin filter and you are not the first to through it away. These are good folks to deal with;

 

http://www.merchant-automotive.com/allison...ltermagnet.aspx

 

 

 

Thearborbarbor said something about a magnet in the top of the filter. I think I made a booboo? I recently changed my tranny filter and just tossed the old one out. Reading that my jaw dropped, because I remember the filter I took off having some kinda magnetic pull to it and the new one didnt. Didnt think much about it at the time. Hope thats not too important? See If I can do some research about getting a new magnet.

[Webb]

thanx man. Didnt mean to hijack the thread. Just doing some casual reading, and had a revelation or more of an OH S**t moment.

 

Also I used a DEX/MERC fluid is that ok?