GMC K25 Extended Cab Pickup 4.1 4WD (1973-09-01 - 1975-12-01)

GMC K25 Extended Cab Pickup 4.8 4WD (1974-09-01 - 1978-12-01)

GMC K25 Extended Cab Pickup 5.7 4WD (1974-09-01 - 1976-12-01)

GMC K25 Extended Cab Pickup 6.6 4WD (1976-09-01 - 1978-12-01)

GMC K25 Extended Cab Pickup 7.4 4WD (1977-09-01 - 1979-12-01)

GMC K25 Extended Cab Pickup 5.0 4WD (1976-09-01 - 1978-12-01)

GMC K25 Extended Cab Pickup 7.4 4WD (1976-09-01 - 1977-12-01)

GMC K25 Extended Cab Pickup 7.4 4WD (1973-09-01 - 1974-12-01)