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  1. #1

    Default 05 Silverado 2500 HD automatic- what trans is in it?

    in an 05 silverado 2500 hd with the 6.0L gas engine. what transmission would be in it? my 02 with the the 8.1L has the 4L80 dually trans but i havn't kept up with what the general is doing lately.
    97 Tahoe 5.7L, automatic, 37" tires on 20 "rims, 8" of lift
    02 avalanche 2500, 8.1L

  2. #2

    Default

    Quote Originally Posted by aquaholic View Post
    in an 05 silverado 2500 hd with the 6.0L gas engine. what transmission would be in it? my 02 with the the 8.1L has the 4L80 dually trans but i havn't kept up with what the general is doing lately.

    You most likely have the.......4L80e Transmission......the RPO Code for it is MT1.....you can find this code inside your glove to confirm.....along with all of the RPO Code....which stand for Regular Production options.....

    Edit:.....also to find out what the other RPO Code are go to the below site and enter your Trucks Vin# number.....it will show you what your Truck came with from the factory,

    Link,
    http://www.compnine.com/vid.php
    Last edited by 99'HEARTBEAT; 12-08-2010 at 06:16 PM. Reason: Added infor.

    MIKE


    99"SILVERADO
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  3. #3
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    Default

    Quote Originally Posted by aquaholic View Post
    my 02 with the the 8.1L has the 4L80 dually trans but i havn't kept up with what the general is doing lately.
    I thought the 8.1L came with the allison Standard.. guess i was wrong on that one...
    Mike

    Currently

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  4. #4

    Default

    i've never seen an allison bolted to a gas engine, only the diesels. you guys know if that 6.0L in a 2005 is cast iron block and cast iron heads or did they use the aluminum heads with a cast iron block?

  5. #5

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    Quote Originally Posted by aquaholic View Post
    i've never seen an allison bolted to a gas engine, only the diesels. you guys know if that 6.0L in a 2005 is cast iron block and cast iron heads or did they use the aluminum heads with a cast iron block?

    The 6.0 Liter in 2005"....had a Iron Block with Aluminum Heads

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