Re: GMC Longhorn Build #'s
Sierra Grande is just GMC's trim equivalent of Chev's Cheyenne Super, even same RPO code (YE9) - could be ordered on any C/K10-20-30. Has nothing to do with frame length.
Chev called 133" wb fleetside truck a longhorn (and put the emblem on the rear of the bedsides), GMC just had 133" wb trucks without the name or emblem.
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