2011 chevy silverado 3500hd question?

im on the cars.com site and im building a silverado 3500hd duely and theres 4 duramax options one normal one and one regional and two that say zw9 with the description. just curious but whats the zw9? heres the link http://www.cars.com/go/configurator/options.jsp

Tags: 2011, 3500HD, Chevy, question, Silverado

2 Responses to “2011 chevy silverado 3500hd question?”

1. J L says:

   January 13, 2012 at 11:48 am

   Zw9 is a pickup bed delete option on the 3500 models. One engine uses the new in house transmission while the other uses the Allison. I would suggest you talk to a chevy dealer not an outside website.
2. GM Customer Svc says:

   January 13, 2012 at 11:56 am

   I would have to agree with the previous answer that this is for the pickup box delete. You can also build the vehicle on the Chevrolet site. You also have the option of chatting with a live agent from the site for more assistance. If you have further questions, you can also contact me via email. Good luck with your purchase!

   Tricia, GM Customer Service.