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Buick Rendezvous Maintenance and Repair



  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 57,334
    Well that's why I posted about the crank seal--if the stop leak stops the leaks, then it wasn't the crank seal in the first place. :)

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  • cdyoung1cdyoung1 Posts: 3
    Dear rendezvousnot,

    My 2005 with 80K just burned up all the wiring in the dash. Di buick help you our with the costs. I am in contact with Buick customer service right now. The dealer in Illinois is charging me $2500 and that is a lot of repair for a 7 year old car. Please let me know

  • tflanstertflanster Posts: 17
    I got zero help from GM - none. I also have a LeSabre. The windows (3) dropped into the door well. Dealer for #1 wanted over $900 to repair. I complained to GM. They fixed it. Next time, no help. I took the car to a local body shop. $240 including parts and labor. Total time while I waited? 35 minutes.

    Take your RDV to a local, trusted mechanic. Tell GM to take a hike.

    And remember my $1500+ oil leaks? I poured a can of gasket seal in the engine over a month ago. No more leaks. I checked yesterday. Undercarriage dry as the day I got the RDV. Anything suspect there?
  • andykayandykay Posts: 1
    I bought a used 2006 Buick Rendezvous. Battery light would remain always on when I test drove this vehicle. I was told by the seller that the car was shown to several mechanics and the battery was replaced twice. But still the light was always on. I bought the vehicle assuming it will be a minor problem. I got the alternator checked, which was fine. Worked on C305 connector with no luck. Got it diagnosed through a dealer and was told that the pcm is faulty and needs to be changed. So changed the pcm (computer) through my mechanic and not the dealer again with no luck. Car works fine but since the battery light which is always on, makes me uncomfortable to go on long trip. Plus I have spent lot of money and time. Can anyone help me solve the problem?

  • bxdbxd Posts: 186
    If your undercarriage went from being a huge mess, to "dry as the day I got the RDV", then I don't think the gasket seal was your fix. Sounds like whoever did your last oil change had not properly tightened the filter and/our drain plug. Was that the dealer's oil change?
  • bxdbxd Posts: 186
    What is the voltage with ignition on, engine not running? What is the voltage with the engine running?
  • lllabratlllabrat Posts: 12
    I have a 2006 rendezvous that I have owned since new. Currently at 110k miles. Has been very reliable. I have changed (DIY) my oil and filter (regular dino 5w 30 and purolator filter) every 5k for the first 100k miles. At about 70 or 80k (can't remember) I started noticing some oil seepage between the engine block and tranny. Nothing major. No leakage on driveway or anything. But the oil and tranny pans we all messy (oil residue) on the outside. Been that way for a while. I was going to change the oil pan gasket but found out you need to separate the engine and tranny at least a couple of inches to do this (what a crappy design) so I nixed that idea. Put mobil 1 at 100k and changed the filter and decided to do oil changes every 10k. Mind you I have always tightened the drain plug and filter firmly. Just went to change the oil and filter at 110k (mobil one again) and the oil pan and tranny pan were clean as a whistle (no residue). Can't explain it but at this point i have to attribute this to mobil 1.

  • You may recall my post a few months ago. I had the same oily, greasy looking oil and tranny pans. A mechanic told me the oil pan gasket and front main seal were leaking. $1200 - $1500 to repair. I called Buick. They sent me to a dealer for a check. Yes, they said, leaking. You need to have us replace the gaskets/seals. That will be "about" $1500. There's about 67K miles on an '03 FWD.

    So I went to O'Reilly's automart and bought a bottle of gasket seal,softener. Put in in. Its been about 4000 miles so far. Zero leaks. I just checked under the car. Oil pan and tran pans are as dry as they were when they were steamed 3 - 4 months ago. I can't explain why, it just is.
  • Well, I love my 2002 Buick Rendezvous, have hardly had any problems with it - had the air conditioning fixed by a wonderful mechanic in June, moved to BC, Canada, cannot get it Passed on the provincial test - very annoying. The lights are on on the dash, will not go off. The airbag light is on - just happened a little while ago, thought it was because I had heavy stuff in the car, thought the car thought someone was sitting in the seat without a seat belt - thought it was a seat belt light . Tok it to canadian Tire to get the provincial test, cost me $302, then they said I have to take it to the dealer (always scary, because their prices are always so crazy compared to other mechanics), did that, today, they ran their own diagnostic test, even thoughI gave them a copy of the diagnostic test Canadian Tire did, yesterday... have to go back to the dealer, again, tomorrow - almost another thousand to do something to turn the red airbag light off. It would at least be better if I knew this was a wiring issue, or a code issue, which I feel like it is - I'm not getting nearly enough information, feels horrible. Wish I had a man to go in with me - shouldn't have to feel like a woman is treated so differently with cars - and frustrated because where else do you spend $1,500, nothing seems to be done, NO real information, minimal conversation, virtually no real explanation, you don't even get to go and see for yourself. Is horrible. But I love my car, have NO plans to be made to feel like I should just buy a new car, since I'm at the dealers, anyway - I hate when that happens...anyway, I hope to God this red airbag light goes off and they can pass my car, so I don't have to deal with this, anymore. No wonder so many people ride their bikes and take the bus in BC. Seems like too many cars from anywhere else fail their BC provincial test... link titlelink title :cry:
  • bxdbxd Posts: 186

    I would not pay another PENNY. You are being taken. $1500 to run a diagnostic? I would go back in there and ask to speak to a manager. Have him explain what they did that earned $1500 in one day of work. Most shops do not have a $187 per hour shop rate!!! Assuming they have not put any parts into it and have only spent 1 day troubleshooting and have charged you $1500 -- I would very calmly but confidently STATE that you are being taken advantage of, that you have paid plenty already, and that you expect your Rendezvous repaired with no further bills. If he tells you they are throwing parts at it (we couldn't figure it out, so we started replacing things), I would get nervous. If he sounds like they still have no clue what's wrong, take the car elsewhere, a better dealer. Then seek a refund from the first dealer and if they turn you down, then hopefully you paid via credit card and can try to get your money back via charge back. Good luck!!
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 57,334
    If the gasket sealer worked then probably your main seal was not leaking. Gasket sealer doesn't work on that type of seal. But good for you, hope it lasts.

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  • Thanks, so far so good. I'm beginning to feel like that old Greek Diogenes who went through life shining a lantern in peoples eyes looking for an honest man.

    I have one local mechanic who I trust. I wouldn't trust a dealership garage if they were attached to lie detectors. I could give several instances of differences between dealers and indepents. Here's just a couple;

    The radio volume control button on my RDV quit working. A dealer wanted $75.00 labor and $15.00 parts. I went to the indy guy. He ordered a button, $6.95. He used a thin-blade screwdriver, popped the old button out, put the new one in. No labor. Total price, $6.95 plus tax.

    The left rear window fell into the window well. Dealer charged $910.00 and kept the car for a day. I complained to Buick and got a refund. Another window, left driver's side, fell in. Took the car to the local guy. He put a new unit in, $240.00, 30 minutes.

    One more: My keyless remote quit. Dealer wanted $85.00 for a new one. I pried it open and replaced the button battery. $2.95. A second remote broke where the key ring went through the loop. It was under warranty so I got a new one. Dealer wanted $40 to program it. I took the chip out of the old one and put it in the new one. Dealer said it wouldn't work. It did.

    If its at all possible, I stay away from dealer garages.
  • My 2005 Rendezvous occasionally "misses" when I'm accelerating. It jolts, as if it's not getting gas for a second, or as if (and I know nothing about cars) maybe one cylinder (?) didn't fire. It doesn't happen all the time, just when it feels like it. I had the transmission checked, and although they managed to find a $100 part that was "due for replacement", they couldn't diagnose or fix it. Nothing shows up on the computer, and I haven't been able to find a mechanic that remembers how to look into the engine to find the problem. Anyone else have this happen?
    Thanks! C
  • I have a 2002 Rendezvous and the air bag light is now on all the time. At first, it would come on and off periodically, but now it has been on all the time for the last couple of months. Anyone know how to fix this? It is a wiring issue? A faulty air bag? It seems like I am not the only one who has had this problem. Does GM pay for this repair since it seems to be common? Next question: My husband has a 2002 Rendezvous also (AWD). It seems that the A/C condenser may be leaking but we are not sure. Something is leaking inside his car and his carpet is wet. Anyone else have this problem? What was it and how was it fixed? I've read that there were issues with the condenser...does this sound like what's wrong? Did GM do anything to fix this? We are looking to get rid of this Rendezvous because we've had sooo many problems with it- the biggest thing was we had to replace the engine and there was only 87k miles on the car at the time!
  • ray80ray80 Posts: 1,643
    I might wonder about the c305 connector, could cause issues like this. Google 'GM c305 connector' to find out more (fuel filter might not be a bad idea either if it hasn't been changed in a while)
  • ray80ray80 Posts: 1,643
    For the AIRBAG light, I would not be surprised if it has to do with wiring connector under the driver or front passenger seat.

    For the wet carpet on the other one, assuming it water (not coolant) the usual suspect would be clogged drain line but first I would check on the condition of the cabin filter(s) as they could create this type of thing if they are clogged up.
  • Thank you so much, Ray80! I'll check those things. C.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 57,334
    From the Buick Service Bulletin:


    Some owners may comment that the carpet in the passenger foot well of the vehicle is wet and the interior of the vehicle has an odor.


    This condition may be caused by a plugged evaporator case drain or a leaking evaporator case drain to cowl seal leak.


    Make a simple tool to clean the evaporator case drain following these steps:

    1. Obtain a fixed antenna mast (new or used).
    2. Measure from the tip of the antenna a distance of 121 mm (4.75 in) and make a paint line or tape line completely around the antenna mast. This will be the depth stop reference.
    This antenna tool is to be reused.

    2001 Aztek and 2002 Rendezvous Vehicles Only:

    1. Place the vehicle in the service stall over a hoist.
    2. Open the hood.
    3. With a light (a flashlight works best), look over the top of the engine between the back of the generator and the power brake vacuum hose attachment to the intake plenum. Look down to the base of the cowl to locate the evaporator case drain outlet.
    4. Insert the antenna mast tool described above into the evaporator case drain to the depth stop reference line on the antenna mast. Some force may be required the last 6.35 mm (.25 in) as you break away the flashing on the inside of the HVAC case covering the drain tube.

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  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 57,334
    The airbag light situation needs a computer scan to help locate the problem Could be as simple as a defective seat belt sensor.

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  • I would say that your electric fuel pump is going bad or you need to change the fuel filters, I had this same problems.
    Also i would find a different mechanic than the one that sold you that transmission part for $100, as i have never heard of a "due for replacement" trans part - If they just changed your trans filter that would be OK.
  • Please comment on what you feel should be done and when. Thanks
  • Good afternoon caande,

    It looks like you've worked with your dealership on this but without any results in getting your primary concern diagnosed. If we can follow up on this with your dealer, please send us more details (including your name and Edmunds username, phone and address, the last 8 of your VIN and current mileage, and the name of your involved dealership) to

    Sarah, GM Customer Service
  • UGH...I have a 2005 Buick Rendezvous. I had a 2002 which blew up after two years, hence being replaced with the 2005. My car is now seven years old with 120,000 miles on it. The check engine light came on two weeks ago. I took it to dealer and dealer says I need a new engine to the tune of 4,000 - 5,000 dollars. I reached out to GM in Michigan explaining that this is my second Rendezvous within 12 years. All my cars before lasted that long and longer without all of this expense. At this point they are "willing," to give me a $3000 toward a new car. Does anyone else find this ridiculous!!! I can't afford a new car in this economy nor can I afford an unreliable GM!!! Any suggestions????
  • Hi Andykay,

    I have a 2006 Buick Rendezvous and I sometimes have the same issue. I have found that when I park on an incline with the front of the car higher than the back, put the hand brake on and leave it parked for an hour or so, it usually goes off by it's self. As far as the root cause....the verdict is still out on that
  • Good afternoon natshans,

    I see you're still searching for the root of the concern; had you already had this diagnosed by a dealership? If so, and if you would like for us to follow up on that with them, please contact us at (include your name, contact information, the last 8 digits of your VIN, and the name of your dealer).

    Sarah, GM Customer Service
  • I've got a rattleing noise like something in the wheel weld is fliping but it's in the engine. Buick garage says it's in the #6 cylinder, possible cam & lifters? They say it will be very expensive. Noise happens between 15 & 20 mph, just as it shifts. In 3,000 miles it used 2 qts of oil but there's no oil leaks. No smoke is noiceable coming out of exhaust although there is black stains slightly on the bottom of chrome exhaust tip. Most of the time at highway speeds (70 mph) everything appears smooth. When oil is down a quart or slightly more there is a rattleing sound that comes and goes at 70 mph. I can't get rid of the Rainier because of this but otherwise this is a good vehicle. What can I do with this engine noise and how much will it cost?
  • I have concern that it only happens when you shift, If it were the cam or lifter, i think it would be an issue all the time. Ask around for a good mechanic that people trust.
  • You could try going to an automotive store, tell them your problem and ask them if they feel a "LUCUs oil additive may help- it cost about $15 a quart, but its cheaper than an engine rebuilt.
  • gmcustsvcgmcustsvc Posts: 4,251
    Good morning malott57!

    We're sorry to hear about this noise concern you're having with your Rainier and see that you have been to visit the Buick dealership on this. If you wanted for us to check in with them at all, please contact us at (include your name and contact information, the last 8 digits of your VIN, and the name of your involved dealership).

    Sarah, GM Customer Service
  • My wife's 2005 Rendezvous Ultra (purchased new; now approx 45K miles) began running rough and its service engine soon light went on. She immediately took it to the local GM dealership (Maher Chevrolet) for service. I've just been told that one of the cylinders is not working. They have ruled out the ignition coil. At a MINIMUM the repair will run $3,600. If we replace the engine the cost will exceed $7,000. Is anyone aware of a serious issue with this engine? I will need to think long and hard about buying another GM vehicle in the future.
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