The title indicates that each of the answers are in some way connected to sports utility vehicles.
Searcher for former myth in Puerto Rico. (8)
EXPLORER (former = ex, myth = lore, Puerto Rico = PR, hence exPloreR).
Title: Ford Explorer.
Cowboy wed redhead fisher. (8)
WRANGLER (cowboy = wrangler, fisher = angler, weds redhead angler)
Title: Jeep Wrangler
Thief hides in baro guesthouse. (5)
ROGUE (baro guesthouse)
Title: Nissan Rogue
Request for repetition hidden in molten core. (6)
ENCORE (molten core)
Title: Buick Encore
Sgt. Preston's home where gold was found. (5)
YUKON (home of a Gold Rush, and home of the titular character of a TV series)
Title: GMC Yukon, cross-branded as a Chevy Tahoe
Ships give weapons to programmer LoveLace. (6)
ARMADA (give weapons = ARM, programmer = ADA Lovelace)
Title: Nissan Armada
Map is incomplete when all is said and done. (5)
ATLAS (Map = atlas, all is said and done = at last)
Title: Volkswagen Atlas
Many thanks to @noedne for the first answer, and for how the title related to all seven answers.