Technical Bulletins

Technical Bulletins provide up-to-date information on issues that come up during the model year. These issues require a more immediate distribution of technical information than the annual Body Builder Manuals can provide. The need for a technical bulletin may be driven by one of the following:

  • Mid-year design change to the vehicle that affects upfitter modifications
  • Information from a GM Service Bulletin that specifically affects upfitter modifications
  • Frequent submissions involving one particular issue that many upfitters encounter
  • Light Duty

    Vehicles include the Canyon/
    Suburban, Uplander, etc
  • Medium Duty

    Vehicles include the
    Top Kick/Kodiak, the
    W, T , N, and F-Series,
  • Passenger

    Vehicles include the
    Caprice, Impala, Malibu,
    and Volt