Transmission Type

[James Fabian]

Hey,

    Hello, I was just wondering if anybody knew what type transmission my truck has. It is a 2004 Silverado, it has 2 options on it, a sports performance suspension and brake package for $3200 and a Extra Heavy Duty towing package for $1800. It came with 20 inch rims. The truck has 256,000 miles on it and the transmission went out. I wanted to know what transmission it has. Please help. Thanks

[riverbanks]

4l60e, Google, transmission pan bolt pattern to be sure

[JimCost2014]

1 hour ago, James Fabian said:

Hey,

    Hello, I was just wondering if anybody knew what type transmission my truck has. It is a 2004 Silverado, it has 2 options on it, a sports performance suspension and brake package for $3200 and a Extra Heavy Duty towing package for $1800. It came with 20 inch rims. The truck has 256,000 miles on it and the transmission went out. I wanted to know what transmission it has. Please help. Thanks

Welcome to the site.

 

Check the RPO sicker in your glovebox for one of these codes:

 

• MG5–  This is the NV3500 manual transmission.  It is the only manual available for the 2004 Silverado.
• M32–  This will be the 4L65E transmission, which is an upgraded version of the 4L60E.
• M30–  This is the 4L60E automatic transmission.  It came in the lighter duty trucks.  It is a four speed overdrive transmission.
• MT1–  This is the 4L80E automatic transmission.  It was used in HD applications.
• MW7 or W74-  Allison Transmission,  If you have a diesel Silverado there’s a high likelihood that you may have one of these two transmissions.