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/
Colorado, Sierra/Silverado,
Express/Savana, Tahoe/Yukon/
Suburban, Uplander, etc.
Medium Duty
Vehicles include the
Top Kick/Kodiak, the
W, T, N, and F-Series,
etc.
Passenger
Vehicles include the
Caprice, Impala, Malibu,
and Volt
