1987 GMC R1500 Suburban. 1988 GMC R1500 Suburban. 1989 GMC R1500 Suburban. 1990 GMC R1500 Suburban. 1991 GMC R1500 Suburban. Part Type: HVAC Blower Switch Connector. Blower Motor Connector; Blower Motor Pigtail; Connector; Connectors; Pigtail; Pigtails.