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2006 gmc sierra z71, transmission??

Discussion in 'Chevy Truck Talk & GM News' started by pistons_1992, Dec 15, 2012.

  1. pistons_1992

    pistons_1992 New Member

    is the 4l60e in the 2006 gmc sierra 1500 z71 trucks?? i have been looking into putting a shift kit in mine but every where i call tells me they dont have one for my year model. but b & m makes one for the 4l60e? did they put a different transmission in the later model trucks for that body style?
  2. barefoot greg

    barefoot greg Rockstar 100 Posts

    to the best of my knowledge yes the 4l60e is the tranny you have unless it has the 4l80e which is the Heavy Duty tranny, ive seen several trucks with these. Its not common but not rare either
  3. Sierraowner5.3

    Sierraowner5.3 Rockstar 3 Years 1000 Posts

    should be a 4L60E in there. one option would be to get a rebuild done, or a 4L80E swapped in. when they do the rebuild they can do a shift kit with tougher parts.

  4. RayVoy

    RayVoy Well-Known Member 2 Years 1000 Posts

    Check your RPO codes. If you have a M30 code, you have the 4L60E tranny.

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