The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
Resources for the Repair and Maintenance of your 1999 Pontiac Montana
1999 Pontiac Montana
1999 Pontiac Montana Problems
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.
The high pressure power steering hose will commonly leak fluid and should be replaced if this is the case.
The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.
1999 Pontiac Montana Recalls (Recent)
Summary: ON CERTAIN PASSENGER VEHICLES AND MINI VANS, THE DRIVER'S AIR BAG INFLATOR MODULES COULD PRODUCE EXCESSIVE INTERNAL PRESSURE. IN THE EVENT OF A CRASH THAT WOULD TRIGGER A DRIVER'S AIR BAG DEPLOYMENT, THE INCREASED INTERNAL PRESSURE CAN CAUSE THE INFLATOR MODULE TO EXPLODE.Learn more »
Summary: ON CERTAIN MINIVANS EQUIPPED WITH SECOND-ROW BUCKET SEATS OR CAPTAIN'S CHAIRS AND A POWER SLIDING DOOR ON THE PASSENGER SIDE OF THE VEHICLE, A PASSENGER USING THE INTERIOR HANDLE TO OPEN THE POWER SLIDING DOOR COULD BE INJURED.Learn more »
Summary: VEHICLE DESCRIPTION: MINIVANS EQUIPPED WITH PASSENGER SIDE POWER SLIDING DOORS. THE DOOR CLOSES BUT MAY NOT BE LATCHED. IF THIS HAPPENS, THE POWER SLIDING DOOR CAN OPEN WHILE THE VEHICLE IS IN MOTION, PARTICULARLY WHEN THE VEHICLE ASCENDS A HILL, MAKES A TURN, OR TRAVELS OVER A ROUGH ROAD SURFACE.Learn more »
Summary: VEHICLE DESCRIPTION: 1997-2001 CHEVROLET VENTURE, PONTIAC MONTANA/TRANSPORT, AND OLDSMOBILE SILHOUETTE MINI VANS EQUIPPED WITH PASSENGER SIDE POWER SLIDING DOORS THAT WERE SERVICED IN CAMPAIGN 01013 (01V-067) FROM APRIL TO AUGUST 2001. ALSO 2001 CHEVROLET VENTURE, PONTIAC MONTANA, AND OLDSMOBILE SILHOUETTE MINI VANS EQUIPPED WITH PASSENGER SIDE POWER SLIDING DOORS ASSEMBLED IN JANUARY THROUGH APRIL 2001. THESE VEHICLES HAVE INADEQUATE FRONT WELDS. IF A FRONT WELD FAILS, THE ACTUATOR CAN JAM IN THE UNLATCHED POSITION AND, WHEN THE SLIDING DOOR CLOSES, IT WILL NOT BE LATCHED.Learn more »
Summary: VEHICLE DESCRIPTION: PASSENGER MINI VANS. THE LEFT AND/OR RIGHT FRONT LOWER INSULATOR TO CRADLE CENTER METAL SLEEVE IS COLLAPSED, WHICH CAN RESULT IN LOSS OF CLAMP LOAD IN THE JOINT. IF THE CLAMP LOAD IS REDUCED OR LOST, THE BOLT CAN BE LOST OR BROKEN AND THE JOINT CAN SEPARATE.Learn more »
1999 Pontiac Montana Questions and Answers
My brakes were no longer feeling correct. I knew the drums in the back were over due. I got them done and even replaced wheel cylinders. Brakes still did not feel right. Finally they were just ...
While driving my van quite, it seems no Gas is reaching the injection system. So I tried spraying some starter fluid and it started what are some areas that would or could correct this issue?
I left my van running the other night, while I ran into a friends house, remembered I might be low on fuel, so ran out & started to drive, but van sputtered and died. Figured I was out of gas,...
where is the fuel filter and fuel pump
1999 Pontiac Montana Reviews
Bought with 25,000 miles on it; now has just turned 100,000. The intake manifold gasket was replaced under warranty (an inherent problem with this model). The transmission had issues around 95,000 miles, but had it repaired (solenoid?) and have always had it serviced per manual. Had the 100K tune-up done and it runs fine. Gets 26/mpg on the interstate! Does not use oil.
Brought the van when it was brand new and 10 years later there are a few issues.
The roof leaks by the center of the top of the windshield and no one can find where its coming from.
The trans shifts rough from first to second.
The complete exhast system has rust holes through it from the engine to the muffler.
The power sliding door has casued it to go to the dealer at least 5 times and still does not work.
Both front windows are coming off track.
First engine had to be replaced.
Power driver seat does not work.
Auto leveling shocks in the back kept coming on when it was parked to the point where it killed the battery a few times and had to be disconnected.
Have replaced the therostat on the current engine.
Windshield wipers dont park correctly.
Windshild washer fluid sprayer does not work on the windshield, just in the rear.
Now it needs a new water pumd or the head gasket is bad.
ITS A MONEY PIT.