The ONLY difference between a Sierra and a Silverado is cosmetic. It is the same truck underneath the sheet metal. As others have said you might get a slightly upscaled trim level wiith a GMC but it is the same truck as a Silverado. If you like the looks of a Sierra over a Silverado buy the GMC as that is the only thing that is different. Sierra's seem to run a little higher price wise.
I always thought GMC was more commercially focused. Maybe no longer. But at one time they had heavy duty options available. Heavy duty axles, 4 bolt blocks etc.?
Originally Posted By: beast3300
GMC is heavier duty in random places than Chevy. Such as U-joints.
FALSE.
it's ignorant thinking like this that has allowed GM to sell the same truck under 2 different names.
I read an interview once w/ a GM engineer and he was asked this same question. he said he hears things like "GMC has thicker sheetmetal" and he just laughed. he said the trucks are the same.