GMC Suburban IV gallery (1955–1959)

The fourth-generation GMC Suburban on the Blue Chip truck architecture introducing powerful V8 engine options.

All photos 0 I 0 1937–1940 II 0 1941–1946 III 0 1947–1955 IV 0 1955–1959 V 0 1960–1966 VI 0 1967–1972 VII 0 1973–1991 VIII (GMT400) 0 1992–1999

The fourth-generation GMC Suburban was launched in early 1955 as part of GMC's new Blue Chip truck generation, mirroring Chevrolet's Task Force family. It embraced modern styling cues including a wraparound panoramic windshield, hooded headlights, and sleek horizontal body lines while offering spacious three-row seating. Under the hood, alongside durable inline-six powerplants, GMC introduced robust V8 engine options sourced from Pontiac displacing 288, 316, 347, and later 336 cubic inches, substantially elevating highway performance and towing capability. Transmissions spanned three-speed and four-speed manual units along with the four-speed Hydra-Matic automatic. The electrical architecture transitioned to a modern 12-volt system, and starting in 1957, factory-authorized NAPCO Powr-Pak four-wheel-drive systems became available directly from dealers, creating an exceptionally capable full-size off-road wagon for North American buyers.