GM suspension question...
I have a new (6,000 miles) 2013 GMC 3500HD SRW truck. It is supposed to have a "handling trailering susp" (Z85) package. I also have a Z71 offroad package. I know that the Z71 package includes skid plates, but it lists the Z71 as an option and says on the window sticker - which I kept - that these options "may replace standard equipment". I can't seem to get any answers from dealerships. Anyone have any ideas? Surely they would not build a 3500HD D/A w/o a heavy duty trailering suspension and replace it with an off road only suspension? Is it possible to have both suspensions?
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