General Motors Corporation
Known defective Upper and Lower Intake Manifold Gasket. You're screwed, GM doesn't care!
We own a 1991 Pontiac Montana Mini-van with 81,000 miles on it. Started leaking anti-freeze, we could not find the source until last week when all hell broke loose. The upper and lower intake manifold gaskets (that we've found internal documentation sent to dealership repair departments stating ...