2004 Pontiac Bonneville Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Pontiac Bonneville
2004 Pontiac Bonneville Problems
The intake manifold gaskets can develop external engine oil or coolant leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue. In some cases the plastic intake manifold my be damaged requiring replacement.
2004 Pontiac Bonneville Questions
still have only cooler air blowing from vents while moving especially.