Pontiac Bonneville water leak problems

Filed Jul 15, 2005 · Body · 11,300 miles · NY

Dt water leaking from the front not sure where it is coming from, floor mats on passenger is wet running back to the battery chamber. Have not contacted dealer. Just noticed this july 4th, 2005. It does this when there are heavy rains.

Filed Jan 24, 2005 · Body, Engine · 18,500 miles · VA

The consumer lost steering control while driving at 45 MPH. The consumer was able to bring the vehicle under control without being involved in a vehicle crash. The vehicle was towed to the dealer, who informed the consumer that the high pressure hose for the power steering assist erupted. The consumer was concerned since a similar incident occurred before. *ak the intermediate steering shaft was replaced, both front window lift motors were replaced, water leaked in the front passenger door, there was an extreme amount of engine noise as well as heat and exhaust entering the passenger compartment, there was two inches of play in the steering wheel, the steering locked up, there was a lack of power steering fluid in the reservoir, high pressure hose fluid leaked all over the underside of the vehicle and throughout the engine, the upper nut and the bolt that held the intermediate steering shaft to the steering wheel assembly was extremely loose.

Filed Sep 19, 2004 · Body · IL

Many water leaks starting at windshield then to trunk then to water in floorboards. S of today my car has be in service dept with 24 issues in 1 years time. Also other mechanical problems. When it has been in shop the who ever works on the car breaks or damages other parts on my car. Service department has kept my car for 3 weeks twice now ot counting all the other times its been there.

Filed May 22, 2004 · Engine · NH · crash

1)in march of 2004,I had to replace a front bearing on this vehicle,to register it. I then had the tires balanced,believing the shaking in the front end would stop,it hasn't.my next plan was to have the front end checked out.may 15th 2004 I started getting a knocking in the engine and set up an appointment to have it checked. The mechanic told me that there was a problem with the heads and that they may need to be redone. I spoke if some other items I wanted done: adjust sun roof,fix drivers window,why is there still a shaking in the front end on the highway and why am I getting water in the trunk? The mechanic expresseed that this vehicle "had been in an accident". The whole drivers side of the vehicle has been replaced. Which might explain why the sun-roof is out of alignment,the trunk leaks water,the front drivers barring had to be replaced and the engine is quite loose under the hood. This vehicle was obviously in an accident with the first owner, repaired and turned in at the end of the lease. Also, how many other vehicles made in this year had to have the heads worked on at 45000 miles,or was the mileage turned back for the return of the lease????

Filed Feb 26, 2004 · Engine · 95,000 miles · MI

As stated many times here-upper intake manifold leaked around metal heat riser tube, leaking water into cylinders causing a vapor lock in cylinders. This problem is often misdiagnosed as head craked or gasket failure. The plastic manifold melts or chafes around tube causing a small hole in the sealed water jacket in the manifold. Water will directly leak into cylinder heads. Very easy fix and a good upper manifold from a junkyard will run around 100 as opposed to a new engine!

Filed Jan 15, 2004 · Engine · 50,000 miles · TN

The engine's plenum(spelling??) manifold started leaking water. My mechanic said it had "warped". He then told me that gm was having quite a problem with this part. He said he had replaced about 10 of these so far this year. And that his part distributor said there was a nationwide backorder on this plenum manifold. I contacted gm and was told there was no problem or backorders on this part. Would like to contact other gm owners to see if they have had similar problems with this part but don't know where to start. Any help will be appreciated. Thanks

Filed Dec 4, 2003 · Engine · 174,517 miles · TN

Air intake plenum on the bonneville 3.8 liter engine failed allowing coolant to enter the engine. The engine immediately locked up when the water entered the piston area. This failure caused damage to the pistons and the valves. Engine is damaged beyond repair and must be replaced.

Filed Jul 18, 2003 · Engine · 104,000 miles · IL

The problem was with the plastic intake manifold.*ak the intake manifold leaked water into the motor and caused it to lock up. The part was replaced. The consumer felt the vehicle should be classified as a lemon. *scc

Filed Apr 9, 2003 · Body, Engine · 11,700 miles · GA

Engine failure cylinders filling with coolant. Talked with several independent garages and they say it's a common occurrence with the 3800 v6. Spoke with pontiac dealer in gainesville ga. According to parts/service department there are no tech bulletins released from gm. Wanted to know if there have been other complaints re: 1995 pontiac bonneville's 3800 v6's. According to independent garage the intake gasket and head gaskets failures. The car also has a water leak into the passenger cabin and trunk as well, appears to leaked since it was manufactured. I owned an oldsmobile with a similar problem in 1992 and the factory didn't seal the cowl area properly when the car was assembled. Thanks for your input!

Filed Aug 28, 2002 · Engine · IL

Engine light illuminated. Pulled over and noticed water leaking from radiator. Upper plenuum plastic melted, allowing water to get into engine, and engine locked up. Please provide any further information.