1979 GMC G1500 4.1L L6; Tank | Switch 1711250; Pigtail 1711450;. 1979 GMC G1500 5.0L V8; Tank | Switch 1711250; Pigtail 1711450;. 1979 GMC G1500 5.7L V8; Tank | Switch 1711250; Pigtail 1711450;. 1979 GMC G1500 6.6L V8; Tank | Switch 1711250; Pigtail 1711450;.
