For 1983-1999 GMC P3500 A/C Compressor Cut-Out Switch 4 Seasons 1984 1985 1986

|Black or Yellow;. A/C Compressor Cut-Out Switch. Compressor Mounted Low Cut-Out Pressure Switch. Mnt Sys Loc: Compressor Mounted. A/C High or Low Side Pressure Switch. Compatible Years: 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999.