<https://www.autoblog.com/buy/2004-GMC-Sierra%203500-Base__4x4_Regular_Cab_133_in._WB_SRW/>
<http://schema.org/vehicleTransmission>
"4-spd auto w/OD"
<https://www.autoblog.com/buy/2004-GMC-Sierra+3500-Base__4x4_Regular_Cab_133_in._WB_SRW/pricing/>