OER Parts offers a wide selection of Body Components for your 1978 GMC C15 Suburban. OER Parts offers 1978 GMC C15 Suburban Door Hinges, 1978 GMC C15 Suburban Door Lock & Key, 1978 GMC C15 Suburban Exterior Door Handles, 1978 GMC C15 Suburban Latches, 1978 GMC C15 Suburban Regulators and Parts, 1978 GMC C15 Suburban Rollers, 1978 GMC C15 Suburban Window Channels, and 1978 GMC C15 Suburban Window Frames.