Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
03060101003/01/200310001282Engine oil or coolant leak. *tt04/25/2003
ENGINE AND ENGINE COOLING - ENGINE
03-06-01-01004/01/2008030601010C10004768Engine oil or coolant leak. *tt gm reminder. *tt install new lower intake manifold gasket. updated 7/18/08 *pe01/06/2004
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
02060101404/01/2002634708Subject regarding revised lower intake manifold installation. *tt10/07/2002
01084500509/01/2006010845005E627671Hard start, no start, stall, and/or fuel gauge inoperative or fluctuates. *yh updated *eh02/13/2002
010601010A06/01/20010106010101620810Subject regarding polymer service pistons. *tt08/30/2001
20090009/20/2000619051Some customers may have experienced intermittent no start or hard start conditions. *tt05/11/2001
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - GAS RECIRCULATION VALVE (EGR VALVE)
02060405310/01/200210000166Revised diagnostic trouble code (dtc) exhaust gas recirculation (egr) solenoid control circuit. *tt02/13/2003

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
10/01/20051200001
 2000 pontiac montana; 3.4ltr 6cyl: service engine soon light prompted service visit. tech told us that codes indicated that intake manifold gaskets had failed and that engine oil and coolant were leaking. such leakage caused oil contamination of the coolant as well as coolant contamination of the oil. technician further commented that this was an extremely common problem with the gm 3.4 ltr 6cyl engine and had been known to gm for several years, but had never been fixed. repair costs approx $800 and must be done since the related codes will cause failure of annual emissions testing and vehicle license tags will not be issued. internet research on this defect confirmed that problem is widespread and well known. gm should be forced to recall all affected vehicles. *tr
01/24/200545000104/19/2003
 Van had the same problem with the intake manifold gasket that is apparently extremely common with this vehicle. it cost me about $800 to have the repair done at a local mechanic. it would have cost more than $1200 to have it done at the dealer. shame on gm for not issuing a full recall for this obvious defect! *jb
10/10/200406/07/2004
 Fuel gauge reads full when empty and empty when under 3/4 of a tank. message center alarms telling me that i am out of fuel but when i stop at the gas station it will only hold no more than five dallors. also i have had to have the break lights replaced sevrel times. the rear motorized window on the driver side does not always shut when pressing the button. and engine is quick to overheat. also the passanger sliding door does not always latch properly, lock and unlock when buttons pressed. the sad thing about it is i have only had the van for just under a year. the van is only five years old and i am already having this kind of problems out of it. needless to say i will never own another pontiac (gm).
01/08/200588852203/07/2001
 The door comes unlatched from the pontiac montana mini vans w/o power slider also. subsequently my van door passanger side came open slamming off half on the road and then remained attached to the top but the track wheel snapped off, making it inpossible to put on with out tools and the muscles to even lift it. *ak
11/28/200477000106/27/2000
 I won a 2000 pontiac montana and i noticed over the past year that i was loosing a little anti-freeze over time. the rate increased over the past month until the engine overheated light came on. when taken to the repair shop, they told me that the intake manifold gasket was leaking and i was loosing anti-freeze through the gasket. they also said this was a common problem for gm 3.1 and 3.4 liter engines. *jb
11/19/200460548111/01/1999
 My 2000 pontiac montana with a 3.4 litre engine was leaking fluid on the garage floor. i took it to a local mechanic and the technician said that the intake gasket was the cause of the problem. he replace the intake gasket and bolts. the total cost was $674.94. the technician also mentioned that this is a common problem with gm v-6 engines.*ak
08/05/200462600106/26/2004
 Head gasket failure, which alot of other people with 2000 pontiac montanas have complained about also...gm is doing nothing about this and they know about the problem.*ak
10/15/200354000
 I purchased the vehicle at 72,000kms (45,000) miles and shortly afterward noticed that coolant needed to be topped up occasionally over the subsequent six month period. there was no evidence of coolant leaking into the crankcase, but there was a pool of coolant collecting externally under the intake manifold. after some on-line investigating, i contacted my local dealer, inquiring as to whether this was a common problem. i was told that it was likely the intake gaskets and sometimes the gaskets "get old and dry up" but that it was not overly common. they quoted me apx $800 to repair. ($350 for the intake gaskets and "numerous" other gaskets that would require replacement plus labour). i politely commented that i was baffled how a 3 year old plastic gasket could be classified as "old and dried up". i subsequently had an independent mechanic replace the gaskets using the newly issued version of the gaskets for a total of apx $450. (he had coincidentally run into the same problem a couple of weeks prior on another gm v-6 product, but apparently the coolant leakage was internal and too late to salvage the engine). mileage at the time of repair on my vehicle was apx 86,000 kms (54,000 miles). he confirmed that upon removal the only evidence was external leakage. i have another 10,000kms on the vehicle since repair and no leakage is apparent at this point.
06/15/200360000
 My parents bought a 2000 montana van in november of 2002. it seems to be leaking antifreeze. the local gm dealer where they purchased it, says it is the intake manifiold gaskets. for $2,500 they could repair the problem. i took the matter up with the owner of the dealership, and showed him a copy of a gm service bulletin which talks about the problem with the gasket material and asked him what they would do about it. he said he would look into it but could not promise anything. an update is that he said that gm would possibly cover 99.9% of the bill. the reason he gave was that the origional owner of the van purchased it at the same dealership and had it regularily serviced there and they have all the service records. the van had 97,000 km when my parents purchased it, since then they have only added 1000km, my parents also figured it was leaking from the day it was purchased. i am not sure if the dealer did an inspection, you would think they would and a leak would have been found.the van is being repaired at the moment, so we will see what comes of this.
10/15/200358000
 My montana has had problems since i bought it used at a certified gm used car lot at lindsey cheverolet. it has been buring through at least 2 quarts of oil or more with-in less then 700 miles. i took it in to the dealership and they checked for leaks but could not find any. there is no smoke from the engine or tail pipe. there is no leaks on the engine anywhere or at the oil pan. they would not do anything about it. i have browsed the web and have found other owners that are having the same problem with their 2000 pontiac montana. i do not have the kind of money to spend on oil like it is going out of style. is there any recalls on this problem or can anyone else help me.
11/15/200219964
 Loosing coolant, coolant in oil. problem was diagnosed as intake manifold gasket leak. problem still exists after repair on 04-01-03, 24,535 miles. current mileage 26,000. extended warranty covered $301.21 of the repair. rowan pontiac/gmc did not want to honor extended warranty for the rental car, zero deductible, or the repair itself.
09/15/200244000
 Transmission went out at around 44000 miles. dealer said the "lip seal" failed inside transmission, after taking it in several times for diagnosis. would not assist with repair cost. ended up having it repaired at aamco. a/c is currently out on the low setting (#1). not yet repaired. just repaired the cooling system. dealer said it was an internal leak. van kept getting low on coolant, had to keep filling it up, however never saw a leak. dealer said problem with the manifold, and coolant was leaking thru and being evaportated, therefore no telltale leak. cost $600 to repair (at 53,000) miles. i hate this van. this is the worst one i've had. unfortunately, i did not buy an extended warranty.
09/15/200238500
 Engine - vehicle was leaking coolant through intake manifold gasket into engine. intake manifold needed to be resealed. pontiac assistance is refusing to help at this time. this is a common problem with the v6 and gm is refusing to acknowledge it. emission - secondary air injection pump failed at 33025 miles and was covered under warranty. this pump failed again at 44000 miles, just 8 months later and cost 160.00 for labor. emission pumps should last longer than 8 months. power window - drivers side power window motor failed 9/2002 at 38500 miles. faulty wiring cluster needed to be replaced at 12528 (n/c).
02/01/2004103/13/2000
 Gas gauge fluctuated and antifreeze leaking. diagnosed as leaking intake manifold gasket and wiring harness for fuel assembly was corroded due to exposure to moisture - repair bill $1400. *jb
112/03/2002
 Consumer complained about vehicle cutting off. took vehicle to a mechanic, and mechanic stated water was getting into the oil. *ak
42416101/01/2000
 Lower manifold and water pump are both leaking on vehicle.*mr the water pump and the manifold gaskets needed to be replaced. the first major failure occurred the day after the consumer took delivery of the vehicle. the vehicle wouldn't come out of first gear. this was the result of the vehicle being shipped without transmission fluid. the transmission had to be replaced. *ph *jb
08/02/200129885712/30/1999
 Problems with paint, gaskets, brakes and cooling system. *mr there was a hissing noise which had come from the tire area due to misalignment, low coolant light had come on, the gaskets ,oil pump and drive o-ring were replaced, the brake pedal had gone to the floor while stopped at a light which happened more than twice and seemed as if they weren't going to work at all and had to pump the pedal to bring the pedal back enough to allow stopping. there was an incident where the consumer had to activate the emergency brake to avoid an accident. the warning light never had come on. the master cylinder was replaced, the front brake pads, resurfaced rotors, cleaned and adjusted rear brakes. other problems are as followed: the trim on the driver side windshield had come apart, the handle on the back latch had come off, and both turn signal bulbs needed to be replaced. *scc *jb
02/25/200355000112/01/2000
 Engine spuddering and died. will not start. garage found coolant in oil. had internal engine damage. engine being replaced. suspect premature failure of intake manifold gasket or dex-cool coolant causing problem. need to investigate. *nlm
02/10/200303/17/2000
 2000 pontiac montana with faulty intake manifold gasket at 42k
12/14/2002
 Consumer states that while driving and without warning the intake manifold cracks causing fluid to leak. dealer notified. ts
ENGINE AND ENGINE COOLING - COOLING SYSTEM
07/21/20091550001
 2000 pontiac montana intake gasket failed...i've read all the other complaints and just wanted to add mine. i called gm and they said they did not have any complaints relative to this problem, and there was no recall either. i have never used anything but dexcool in this van, now it is going to cost me to have it fixed for following directions....now i understand why pontiac is being dropped by gm they would not be able to pay all the repair bills if the owned up to their mistake...goodbye pontiac!!!!!!!! *tr
02/01/200850000409/10/2003
 I have 3 children, one disabled. i should have known from day 1 when the manual sliding door broke two weeks after purchase. almost killed my disabled child when it sprang open on him. dealer, said he broke it, a child with full body muscle disorders who can't lift a brick. now we have had unending problems with the engine, coolant levels, the car smells like burnt plastic often, times when i went to start it, nothing happened. now i am told that the engine will seize soon. interesting since i always changed the fluids on time and i have only owned it for 5 years. both side doors do not work, automatic works sometimes, manual comes off the track. one of the rear passenger seats does not fold properly. the car often feels as though it has bad gas jerking back and forth while driving it. i am afraid, i have three kids in the car usually. i need a car and now with no money and no ability to buy a new one, i am told that the car will seize if i do not spend $4000 to replace the engine. i am getting a second opinion but from what i am reading, it seems feudal. shame on gm!! why wasn't this car recalled??? this is a van, a family car!!! you want to kill children???? i am writing my congressman and the better business bureau. this car should have been taken out of circulation until the problems were ironed out. if something happens to my children, i will make it my personal crusade to shut down all gm plants. the amount of money i put into this car is ridiculous when i had a 20 year old volvo that is still running. shame on america! this is why our industries are failing and we must turn to foreign countries. so i have a car that i do not know what to do with. i seriously have no money to replace the engine nor buy a new car. i have children in 3 different schools the oldest needing therapies each day that i must drive him to. what am i to do? *tr
07/20/200687000105/29/2000
 Intake gasket leaking coolant. this is a gross misconduct on behalf of gm allowing these to fail without any compensation. no events leading up to this failure...just drive normally. consequences are $1200 to replace a gasket that should have lasted more than six years.
03/13/20061
 2000 montana leaked coolant from lower intake gasket. *ts *nm
04/27/20061
 My 2000 pontiac montana has coolant leaking into the engine through the intake manifold. i noticed the problem today when i changed the oil. problem has not been corrected yet. at about 50,000 miles i had to start adding a little coolant to the reservoir with every oil change, but it wasn't enough to notice the water in the oil. now, with nearly 80,000 miles the leak is bad enough that the coolant light recently came on. *nm
08/10/200260000107/10/2000
 2000 pontiac montana 3.4 liter numerous coolant leaks at intake area at about 60,000 miles. also coolant cooler allowed oil to get in to the coolant system. i retorqued intake and aleviated problem for about 10,000 miles and then came back. ended up having dealer replace intake gaskets and they informed me that gm had redesigned the gaskets because of an epidemic of this exact problem. the dealer designated 1 mechanic to specialize with this defect and i talked to the mechanic and he ingformed me that he had done this so much that he could do the wokk in about 3 hrs versus the original 6 to 7 hours it took him the first time his quote you do it as much as i have and you get very efficient. gm should have recalled and made good on the repair. in the last 20 years i have bought 6 new gm vehicles and i am very dissappointed that the dealer/corporate would not make good on the repair. it cost me $550.00 for dealer repair. i want to be reimbersed for the repair cost for this is a known defect that gm chose to ignore other that making sure that the newer montanas (3.4l) have the new designed gaskets.
01/08/200590000102/14/2000
 1.while getting my tires rotated, carx noticed my coolant was leaking. 2. antifreeze was getting into the engine, and if not fixed would damage it. 2. took car to pontiac dealer. bill to fix was $650. replaced the lower intake gasket. *jb
12/12/20041
 Low coolant light came on. could smell burning coolant turns out the intake manifold gasket was cracked causing coolant to leak. paid $900 in repairs. contacted general motors and the will not do anything at this time. seems to be a common problem with this model car. this happened at 71,000 miles. *jb
11/26/200466000210/15/1999
 I have a 2000 pontiac montana and have had a coolant leak problem. my van has only 66k miles on it and has been in 2 times for coolant leaks. on 11/26/04 i had a coolant leak and had to have lower manifold gasket replaced. on 12/2/04, leaking coolant into the interior and now have bad heater core. i have been researching and there are many other problems of the same exact cause. i believe this is a manufacturer defect and should be compensated back what i paid out.*ak
06/10/2003105/05/2003
 At 26,000 miles my van started leaking coolant, alot of it. i took it to the dealership nearby and the mechanic took a quick look and said it would need the engine pulled and all the rubber rings or gaskets in the engine replaced because they were leaking and it was a common problem with this vehicle. he said they need to be replaced with better quality ones because that was the reason they were leaking, that they broked down quickly because they were inferior. and all this would cost me around $1,000. vin#1gmdu23e6yd123617. *ak
01/03/2004103/26/2001
 1/3/04 van failed to start-reason unknown. took to mechanic to check out and discovered oil leak in the engine at 50,000 this is crazy, this type of thing should not happen at 50,000 miles this is obviously a problem in the engineering or part that are being used.*ak
12/01/20038200004/15/2000
 My wife and i were on a rural road in northern michigan when our van stopped running with no prior problems. we ended up walking almost seven miles in bitter cold to get back home. later on we learned that the dex type coolant had leaked into the engine and caused the cam to fail.
08/19/20031
 Dealer replaced lower intake manifold and related sealer. also, replaced the water pump, and flushed the cooling system. coolant went into the engine. *ak
04/28/2003
 Intake manifold gaskets failed at 50k, were replaced in january of 2002. now in april 2003 we have the same problem with the intake manifold gaskets leaking and have antifreeze leak in the water pump as well.
06/20/2000403/01/2000
 Several days prior to engine overheating experienced electrical affecting the radio -- then engine overheated requiring vehicle to be towed -- two more time that same week after being repaired each time the engine overheated -- on third time mfg. replaced engine completely. three weeks after new engine installed the electrical problems with radio reoccurred as well as interior & exterior lights flickering followed a few days later with the new engine overheating. in repair shop now for fourth repair.*ak
ENGINE AND ENGINE COOLING - COOLING SYSTEM - FAN
11/06/200347000306/11/2003
 Was having a loud whooping sound took to dealership to have checked out no one could figure out the sound so they check a/c and said the a/c compressor was going out and replaced it since then i have had the van in the shop cause a/c will not work 3 times since i have noticed that there was a nother complaint about a loud sound no one could figure out to and my loud sound is still happening.*ak
ENGINE AND ENGINE COOLING - COOLING SYSTEM - RADIATOR ASSEMBLY
01/14/2003
 00 montana has been at dealer 3 times in 8 days.the low coolant level light came on & would not go off.took veh to dealer on a tues was informed would have back in 2-3.after review there was a leak in the lower intake manifold but leak was not external since no fluids were on ground.supposed parts were replaced along w/gaskets.advised dealer coolant had to be going somewhere if not external; so requested for an oil change to be done since bad coolant may have gotten into oil. dealer refused but service mgr approved.veh was ret'd to me on fri.upon leaving dealer engine had a chirping noise not there previous.spoke with salesman and he confirmed there was a noise & to bring veh back in next day for service to look at.on way home, low coolant light came on again;problem not fixed.upon taking vehicle to dealer following day they claimed their was coolant or some form of liquid on belt and would clean off.service department stated the low coolant light did not come on.assured us vehcile safe to drive.the rest of weekend low coolant light kept coming on at sporadic intervals. contacted dealer monday morning;was advised to bring in on wednesday for further investigation.dropped vehicle off & dealership had vehicle for additional day & advised the sensor was bad and was replaced.dealership states chirping noise was gone as they took apart belts and fully cleaned again. engine at time of drop off was running rough.dealer states after computer and diagnostic testing engine is fine.recv'd vehicle back w/ sensor replaced;chirping noise somewhat dissipated-however not fully & was advised vehicle is safe to drive.vehilce appears to be okay but still notice not running as crisp as before.dealer affirms since vehicle under warranty to see how things go & advise if any further problem.another pontiac dealer w/in 15 miles had 3 montana's in service depart. for same related issues.one of those vehicles sustained $5,100 on a 99 model manufacture defect w/engines &/or parts?mll
10/25/2000202/01/2000
 Since 10/25/00 when the first time this van proceeded to overheat and the theromstat was changed in ohio on vacation. brought it back to the dealer in mo and was told they had to tighten a clamp and check the theromstat and they said problem solved. its been in the shop for various other problems but always smelling antifreeze and then the air conditoner wasnt cooling the way it should and the radio was replaced due to the fact the lcd screen went out. on 9-13 - 01 was back in the dealer ...different dealer than it was purchased from ...for various items and one to check on the air conditioner for we were going on a trip...was told everything was fine. went on trip and on the way home ..the van started to overheat again...stopped pulled over and let the van rest and shut off ac and proceeded to hotel and then drove home the next day and in the dealership it went only for them to tell me it was a defective raditor cap and debri in between the raditor and condersor.*ak
ENGINE AND ENGINE COOLING - ENGINE
07/08/200984000
 Intake manifold needed to be replaced at 84,000 miles. very costly repair $1,500.00
04/07/20091
 I own a 2000 pontiac montana that needs an intake gasket replaced. the company specifically advises that no other coolant is to be used in this van but dexcool. i never used a different product than dexcool. now dexcool has destroyed that gasket. my car is leaking fluids and barely heats. cost for repair is outlandishly expensive. the recommendations by gm were followed and they were wrong! this is a manufacturing issue, not a consumer one. the onus should be on gm to recall and repair the intake gasket immediately! they have gotten away with this problem for years and every montana has this issue. please help. thank you. *tr
10/01/20081000001
 Manifold intake gasket failure at 125,000 miles replaced at cost of $1100, mechanic told me this was common problem for vehicle, because original gasket was plastic and failed often. would like at least partial refund for repair. *tr
03/19/2008107000105/01/2001
 Blown head gasket at 107k miles in a 2000 pontiac montana. this is an expensive repair caused by faulty design or the use of dex cool. this is one of many failures on the vehicle. *tr
08/08/200537182601/07/2000
 New march 2000. van always receives regular maintenance. the following is a history of repairs: 4/00 windshield wipers would not return to closed position - dealer fixed. 12/03 (37,179 mi) tps sensor breaking down causing idle to surge - dealer replaced throttle position sensor, completed reprogram ($255.14) 12/03 (37,182 mi) air bag light coming on - dealer replaced right front seat belt buckle under warranty (labor $134.51). 12/27/03 (37,555 mi) was in collision (other vehicle pulled out in front of me as i was coming down small overpass, he was cited). my van sustained $4,500 in front end damages, his car was totaled. my air bags did not deploy. no one injured. 5/04 (40,983 mi) rear hatch would not stay up - dealer replaced both hatch props ($258.73) 7/04 (43,437 mi) van was shifting hard, would not pick up speed correctly. dealer replaced pressure control solenoid, flushed transmission and replaced front brake pads and machined rotors ($986.48). 12/04 (48,284 mi) van would not start on several occasions. known independent repair shop replaced battery, checked oil leak. ($114.90). 4/05 (51,646 mi) low coolant light /check engine light coming on. same independent repair shop replaced intake gaskets, thermostat, spark plugs and filter, and oil pump shaft 0-ring. corrected air bag light ($791.03) 6/05 purchased new tires and were told needed all new tie rods. we went on vacation july 9, 2005 (ohio to virginia and back). concerned that the van shook terribly when applying the brakes on long downgrades through wv and va. we were towing nothing. the very next day, after returning home, the van would not start consistently. 7/05 (56,533 mi) told that the computer crashed. same independent repair shop replaced ecm, crank sensor, ign module and machined front rotors which if you remember were just done in july of 2004 ($982.02). after researching the track record of pontiac montana, have found that many consumers having the same problems. *nm
02/09/200570288111/01/2000
 Dexcool antifreeze leaking from engine. took vehicle to my mechanic and was told it had a faulting intake gasket. replaced all gaskets at a cost of almost $800. was told gm redesigned gasket but did not place a recall on the part. old parts are not available. *jb
10/15/200499550102/15/1999
 Lower intake gasket failed. mdealership repaired at my cost shortly after, the cam shaft broke. i will not pay to fix. *ak
02/09/200476500106/10/2000
 Recently a number of gm car/vans have experienced problems with the 3100 engine. a great number of them have a low coolant indication with the result being a new intake manifold with a cost of $700 to $1000. is there a problem with this engine. *jb
330001
 Consumer complained about engine problems. a variety of gaskets were replaced; however, engine problems still exist. *ak
04/19/20031
 The intake manifold cracked while driving, which caused coolant to leak onto the engine. *jb
11/29/2002450001
 Pontiac montana 2000: my car only has 49,000 miles yet has a major problem. i just got a repair estimate for my intake manifold gasket which is leaking dexcool out and into my engine. repair, which after researching on the internet, appears common yet has not been recalled by gm. *jb
03/01/2000
 Heavy valve lifter noise - indicating possible early engine failure
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
12/28/20072
 I own a 2000 pontiac montana,in the past 2 years i have had to replace the waterpumpx2 and intake manifold gasket x2. the gasket lasted 18 months and the waterpump 3 months. i feel that putting 1400.00 dollars into a vehicle within 18 months for the same parts is outrageous. the serviceman however stated the warranty was 1 year. something seems very wrong with this picture. *cn
09/26/20064
 On sept 26, 2006, i have my pontiac montana my 2000 vehicle service in a dealer for issue of engine vibration occasionally. the repairing fee is about $1000 to replace spark plug and coils. at 5:36 pm of during my driving back home in i-696, my vehicle engine suddenly stop running at about 75 mile/hour which made me almost become involved in a deadly accident. at this time, i called the dealer to inform this issue and dealer made a note. when the engine stopped running, the dic was lighting up without any information. i came back to the dealer and they were not able to find anything wrong. i was asked to usa a recording data tool, however, the next a month, the vehicle was running ok without incident. therefore, i stopped recording data for the vehicle. in january of 2007, the same problem began to happen again. 3 times when i driving the vehicle at 60 to 75 mile/hour, the vehicle engine stop running suddenly if the brake was pushed. then i went back to dealer again for trouble shooting on 1/4/07. they still can not find anything wrong and then schedule to a full check on 1/9/07. however on 2:30 pm of 1/8/07, the vehicle can not be running and has to tow to dealer again. in the meantime, i called gm and dealer to report this incident. i had twice in a very dangerous situation and put my family and myself life in a very harmful situation. gm give me a case number 71-476-171970. the dealer informed me that they can get vehicle started but can not resolve the issue of engine suddenly stopping with brake pressed. i need to pay $711 for the vehicle running and then go from there. the dealer and gm had a talk, then gm representative told me she will pursue to reimburse me the repairing fee. then after 4 days gm told me again they will not to reimburse me the money now since i am scared for the engine stop issue, i can not drive vehicle over 65 mile/hour. *jb
11/26/200467500106/28/2002
 Noticed that coolant had to be added even though no aparent leak or overheating on my 2000 pontiac montana. i was told by the dealer it was an intake manifold gasket leak and would cost $970 to fix. i found that this is a common problem on this model engine either due to the dex cool coolant or the gasket. if this sin't fixed, it could lead to being stranded or stuck in a dangerous loacation.*ak
12/23/20034890005/29/1997
 Lower intake manafold leaking coolant into engin oil.
12/12/200366267103/21/2000
 Intake manifold gasket leaked coolant into the engine crankcase. this caused hydraulic lifter damage - lifters had to be replaced and gasket replaced. additional engine damage is unknown at this time.*ak
12/16/2001202/01/2000
 Vehicle will not start. second occurrence. fearful of vehicle safety and reliability. informed on previous failure that problem was fuel pump. fell vehicle has too few miles to be having these types of problems. *ak
04/01/200110
 Vehicle stalls at any speed, has stalled 10 times so far. consumer noticed it never stalls in sunny weather, always when it rains or after it has rained. vehicle taken to dealer 4 times, cannot find a cause for problem. *ak
06/17/20011
 While vehicle was in park in garage without keys in ignition, vehicle caught on fire. police report stated that fire began in engine compartment. fire spread from vehicle to the garage and also melted the neighbors vinyl siding. *ak
07/27/2000
 Vehicle stalls while driving, and will intermittently start. also, sliding doors lock up. dealer inspected vehicle & moved the spark plug over thinking it was causing the disruption. *ak
04/08/2000
 Consumer was traveling 25mph vehicle just stopped. last friday while traveling there was a loud cracking noise, and vehicle just shut off. electrical system was fine, but the engine wasn't operable. *ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
09/15/200244000
 Transmission went out at around 44000 miles. dealer said the "lip seal" failed inside transmission, after taking it in several times for diagnosis. would not assist with repair cost. ended up having it repaired at aamco. a/c is currently out on the low setting (#1). not yet repaired. just repaired the cooling system. dealer said it was an internal leak. van kept getting low on coolant, had to keep filling it up, however never saw a leak. dealer said problem with the manifold, and coolant was leaking thru and being evaportated, therefore no telltale leak. cost $600 to repair (at 53,000) miles. i hate this van. this is the worst one i've had. unfortunately, i did not buy an extended warranty.
09/15/200238500
 Engine - vehicle was leaking coolant through intake manifold gasket into engine. intake manifold needed to be resealed. pontiac assistance is refusing to help at this time. this is a common problem with the v6 and gm is refusing to acknowledge it. emission - secondary air injection pump failed at 33025 miles and was covered under warranty. this pump failed again at 44000 miles, just 8 months later and cost 160.00 for labor. emission pumps should last longer than 8 months. power window - drivers side power window motor failed 9/2002 at 38500 miles. faulty wiring cluster needed to be replaced at 12528 (n/c).
11/01/2001
 A malfunction is present in the exhaust system that causes exhaust fumes to escape into passenger's compartment that causes passengers to become ill. dealer has yet to be contacted. please provide further details.*ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
01/08/200588852203/07/2001
 The door comes unlatched from the pontiac montana mini vans w/o power slider also. subsequently my van door passanger side came open slamming off half on the road and then remained attached to the top but the track wheel snapped off, making it inpossible to put on with out tools and the muscles to even lift it. *ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
03/04/2005350001
 While driving the check engine light came on. consumer pulled off the road , called the mechanic, who told them to check the water level, which was fine , the antifreeze level was empty. consumer refilled the antifreeze and drove to the dealership, who indicated that the intake manifold gasket had gone out, and needed to be replaced. this was a common problem with this vehicle. *ak
08/24/200455000108/31/1999
 Intake manifold gasket leaking coolant. replacement of intake manifold gasket, cooling system flush, oil and filter change.*ak
06/06/200440191111/05/1999
 Upper and lower manifold gasket coolant leaks. (dealer claims that they are doing 10 a week on this vehicle). *ak
03/18/200448000104/08/2000
 Consumer complained about intake manifold gasket which was causing a coolant leak into the engine. intake manifold gasket was replaced by dealer. *ak the consumer feels this part should not have failed at 48,000 miles. *nm
01/31/200354000102/01/2000
 I have a 2000 pontiac montana with a 3.4 liter engine. i had the intake manifold gasket replaced in january of 2003 because the coolant was leaking out. it cost about $600 to do this. i recently changed the oil on february 29, 2004 and noticed coolant in the oil again. i am now working with the mechanic again to fix the problem. apparently there is a quality control problem at gm regarding their manifold gaskets. i know other people with the same problem. a friend of mine owns a 2003 grand am with a 3.4 liter and they had to have their intake manifold gasket replaced twice. my brothers rich and steve also owned gm trucks that needed the intake gaskets replaced.*ak
02/14/20041090001
 The intake manifold gasket had to be replaced on my 2000 pontiac montana at 109,000 miles. my daughter has a 2001 pontiac montana with about 47,000 miles and she needs to replace the intake manifold gasket also. sounds like the gasket may have been substandard. *ak
490002
 Consumer noticed that vehicle had a low coolant level. took the vehicle to the dealer, who determined that the intake manifold was cracked, and had to be replaced. *ak
08/19/20031
 Dealer replaced lower intake manifold and related sealer. also, replaced the water pump, and flushed the cooling system. coolant went into the engine. *ak
01/11/200333600
 Low coolant light intermittently illuminates. dealer diagnosed problem as a leak in the lower intake manifold. dealer has attempted to repair several times, but problem still occurring. ph