In the context of the input sentence, determine the relationship between 'GMC' and 'truck'.
Options: parent organization, platform, location of formation, product/material produced

During the year, we launched on several models, including their new SUV lineup, the Cadillac Escalade, GMC Yukon and the Chevrolet Tahoe, adding to their full-size truck lineup that we launched in earlier.
product/material produced