Coulter Phoenix has sold Cadillac's in Arizona since 1923. Shop Coulter - Trust Coulter. 2025 Cadillac Escalade IQ Sport 1 Summit White Electric ZEV 680hp AWD 1-Speed Automatic YEAR MAKE MODEL, LOW MILES, MILES ONLY. We offer a luxury car buying and ownership experience, Visit us today and find out why we are the Cadillac, Buick, GMC dealer of choice for Phoenix, Glendale, Scottsdale, Peoria, and the Arrowhead areas. Conveniently located just minutes from the Biltmore, we are a quick drive anywhere in the valley.