While driving the vehicles under normal conditions the vehicles turns itself off. While at stop lights the vehicle chugs and the RPM gauge dives down. When starting the vehicle and after the engine is on and the key has been released, the starter continues to crank on its own.
2003 Pontiac Montana engine complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
Intake manifold gasket is failing...and gm knows of this widespread problem and refuses to fix it out of warranty. My coolant was leaking out and they would never find the problem under warranty, and now they refuse with 4 months out of the warranty. Amazing.
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