ESCALADE 15-20 head-up display, w/multifunction (opt UV6). ESCALADE ESV 15-20 head-up display, w/multifunction (opt UV6). HEAD UP,23321030. SUBURBAN 1500 15-17 head-up display (opt UV6), (in dash). SUBURBAN 1500 18-20 head-up display, w/multifunction (opt UV6).