truck drops to 4cyl

Discussion in 'GM Powertrain' started by ronniesk8, May 12, 2010.

  1. ronniesk8

    ronniesk8 Member

    do all new silverados do econ mode im just wondering if mine does
     
  2. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    just run your VIN number it will tell you from your specific engine code
     

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