Is there a vacuum diaphram inline to the door (one way check valve)? It may either need one or the one there replaced. If not check the actuator on the door itself, it may have a small crack in it that the engine vacuum can hold pressure with but whe...
Try gmpartsdirect.com for a replacement as we used quite a few of the same parts in othr cars and trucks as well. In fact I think all GM motors for htrs were the same back then but just to be sure look up this site as you would be surprised at what w...
Any old car can be high maintenance depending on how well it was taken care of during its life and what the current condition is. Obviously, if you buy a Corvette that's been fully restored, the reliability will be much better than if you were to buy...