text: We present multi-epoch observations from the Submillimeter Array (SMA) for a sample of 171 bright blazars, 
  43 of which were detected by Fermi during the ﬁrst three months of observations. We explore the correlation 
  between their gamma-ray properties and submillimeter observations of their parsec-scale jets, with a special 
  emphasis on spectral index in both bands and the variability of the synchrotron component. Subclass is de- 
  termined using a combination of Fermi designation and the Candidate Gamma-Ray Blazar Survey (CGRaBS), 
  resulting in 35 BL Lac objects and 136 ﬂat-spectrum radio quasars (FSRQs) in our total sample. We calculate 
  submillimeter energy spectral indices using contemporaneous observations in the 1 mm and 850 micron bands 
  during the months August–October 2008. The submillimeter light curves are modeled as ﬁrst-order continuous 
  autoregressive processes, from which we derive characteristic timescales. Our blazar sample exhibits no diﬀer- 
  ences in submillimeter variability amplitude or characteristic timescale as a function of subclass or luminosity. 
  All of the the light curves are consistent with being produced by a single process that accounts for both low 
  and high states, and there is additional evidence that objects may be transitioning between blazar class during 
  ﬂaring epochs. 