Last post on Oct 06, 2013 at 4:45 PM
You are in the Buick Rendezvous
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Buick Rendezvous, Electrical, SUV
#35 of 137 Re: Coolant and Overheating Issue [mrfsra]
Mar 18, 2011 (1:54 pm)
The problem with the Buick Rendezvous Overheating is from a bad compartment design, The engine sits high and has no breathing room or a place for heat to escape..
I purchased my 2002 Rendezvous knowing I could fix the problem, the original owner told me replaced a head gasket but it was still running to hot! So much so, it blistered some paint on the hood!
I fixed the problem by simply cutting an inch away from the rubber seal at the highest point of the hood area.. (1" x 2 feet from center..)
I've never had a over heating problem since......... Bud Coopersburg PA
#36 of 137 Re: Rendezvous overheating problem!! [renman1]
Mar 23, 2011 (6:22 am)
I had the same problem in 08. took car to a dealer to have fixed. problems still arose thru the years.finally took car to a private mechanic this week.he informed me that one gasket was gone, and they (the dealer mechanic)had left the old gasket under new gasket that was put on.bottom line people,DO NOT TAKE TO DEALER!.these guys are totally incompetant,and it seems all they do is cause more problems down the road..better to find a HONEST private mechanic. dealers do NOT care about what they do,all they want is your money...I would, and I will boycott all dealers from now on. If they can't be honest,and fix the problems the right way, the first time, they need to be put out of business. I am totally disgusted about what we found out on this car,that has been going on for 3 yrs. till now..
#37 of 137 Re: Coolant and Overheating Issue [buddo9]
Mar 25, 2011 (6:54 am)
IMO - Removing a small area of the rubber seal from the inner hood's upper compartment area is a bad DIY mod. The more I think about it, the more "too risky" comes to mind. This factory rubber seal is used to stop ice / rain from sliding down the windshield, into the wiper arm cavity area, melting and water dropping / draining on TOP of the hot engine. Hot upper engine, water and melting slush / snow in that specific area that contains lots of electrical wires is a very bad combination as well. Too risky in my books.
Instead of cutting away factory rubber seals (that is used to protect the engine from water / cold slush), perhaps it would be much better to install a low profile air vent on top of the factory hood. Instead of facing its opening forward (like on race cars), simply have its hood opening facing to the rear (to the windshield direction). Thus, natural air flow into the vehicle's front rad, across the engine and "out" this low profile hood vent. And, no factory rubber seals are "cut away" either. If wondering, many hood vents have filter screens. Thus, eliminating (dramatically reducing) water from entering into the hood opening.
For a few pictures of low profile / afordable hood vent, surf:
http://www.sourcingmap.com/universal-car-auto-plastic-hood-scoop-air-flow-vent-w- - - hite-p-53666.html
Note: Instead of installing this low cost hood vent with its opening facing forward, simply install it facing backwards. And if vehicle is driven in super hot climate, install 2 x low cost hood vents instead.
Also.... Not too sure about "over heating" being only a Buick RDV problem. If you do a google search of "3.4L engine gasket problem", you'll see lots of gasket problems on this specific engine. For example, Venture van, Aztek, GM cars and other Pontiac / Chev vehicles. Some say its the poor gasket materials used in 200-2004, some say its from Dexcool's "too acidic" formula and some say its from a bad design engine. And, some certified mechanics say its from all 3 reasons (regardless of vehicle model). Thus, not too sure if installing a hood vent (to create more air flow / cooling) under the hood is a proactive "fix all" for everyone. I'm sure it will help reduce the risk in super hot climate areas and in all, don't think its a proactive fix-all for everyone (with the older 3.4L engine).
Good luck with your Buick RDV....
#38 of 137 Re: Rendezvous overheating problem!! [wizardone]
Mar 25, 2011 (6:48 am)
Sorry to hear that it took "that long of time" to identify a head gasket problem within your 2008 RDV vehicle. I do agree that "some" auto dealers are useless. At times, my one GM auto dealer was useless as well.
For example... My new GM vehicle kept having a dead battery after the vehicle sat for 3+ days. They checked this, they checked that. I kept telling them my vehilce's battery didn't hold a charge after sitting for 3+ days and they kept thinking it was a charging problem. I told them to "park it" for 4 days, remove its battery cables and "let sit". On day 4, they connected its battery cables, turned its key and as predicted, "click - click". Unknown to their belief, the brand new Delco battery wouldn't hold a charge after sitting for 3+ days. And it took 3 x visits for them to realize the customer (me) was right. Man, they should have had a V8 slap in the head thing as well...
Sorry to mumble on..... I do agree with you. Some GM dealers are useless in even simple diagnoses. Like diagnosing a dead battery. Sad to say but true....
If wondering, my wife has a 2nd generation 2003 Buick RDV with 3.4L engine. Unknown to some, this configuration has a high risk of blowing its intake and head gaskets. My local mechanic tells me to drive the vehicle "softly", change its Dexcool every 3 years (instead of every 5 years) and don't pull a trailer with it. If / when its gasket goes, we either fix it or trade the vehicle in. Which ever is a better "cost analysis wise" - at that point in time.
You might want to implement the same proactive items on our Buick RDV as well. re: Change its Dexcool fluid every 3 years, drive "softly" and don't over stress it (like pulling a utility trailer). So far... No gasket blowing problems on our 2003 RDV....
Good luck with your RDV.....
#39 of 137 Re: Rendezvous overheating problem!! [spike99]
Mar 25, 2011 (7:29 am)
Not risky at all`!! ! covered that base when I did it ...
You only cut half way down leaving the shelf fo drain any water, like any of the older models. I did a test spraying water over the windshield with great pressure, not a drop got on the engine!
For cars left out doors and ice forming , put a windshield cover over that area.. (Any auto store sells them..)
My car has been this way for a year and runs pefectly cool now..
It is the only way! The encine sits in it's own heat and will destory itself..
The old addage was "Heat destroys engines" Good luck!
If you cut .. One Foot to the right and left from center will do it.. I could send a photo if you like,, buddo19ATPTDdotnet Bud
#40 of 137 Re: Rendezvous overheating problem!! [buddo9]
Mar 25, 2011 (12:56 pm)
Guessing you don't live or drive with snow / ice county and had the opportunity 1st hand to see wiper blades "pull" snow downward - into the wiper blade cavity area. Guessing you've never had to clean that area out with you own hands. Or, see that cavity area ice up so bad, its stops the wipers from returning to their home postion.
Yes. Heat destroys engines. Adding "more air flow" around an engine is a great idea. However, not too sure if cutting factory rubber seals (instead of safer means like vented hood vents) is a good thing to do. Especially if one lives in snow / ice covered driving condutions - that exists in upper USA regions.
#41 of 137 Rendezvous overheating problem
Aug 24, 2011 (7:30 am)
The same just thing happened to me and my family this weekend. We ended up stranded 200 miles away from home by the head gasket issue. In speaking to a local repair person, he mentioned the Dex-Cool coolant seems to be causing the head gaskets to deteriorate prematurely. His recommendation was to remove all the Dex-Cool coolant and replace it with "regular" coolant.
I know Buick & GM are a great car company with a long and decorated history, so I'm very surprised they would put a product out that would cause so many problems to the owners and tarter their reputation. I would think they would force the gasket manufacturer or the coolant chemical company to stand behind their product a bit better.
It costed me over $500 to rent a hotel room, rent a car to drive my family home and to tow my car home. I would of repaired it where it was, but since I was in a different State, I didn't know anybody there nor the repair shops.
Total repair bill was quoted around $1800 and may go higher. For a vehicle with under 85K miles, this is excessive. I've had many other vehicles over the years and head gaskets have always lasted well over 125K and as high as 200K miles. This is a surprise for Buick.
#42 of 137 It will always heat up
Aug 24, 2011 (9:00 am)
I went to great lengths to help "all" with overheating problems, ( Which seems to be anyone owning a Rendezvous.. ) The problem is not head gaskets! That is the outcome of the heat problem, Heat is a disaster to any engine!
The problem is a bad engine compartment design! There is almost no vent above the engine, causing the engine to overheat bathing in it's own "heat chamber"
I did this as I know about heat related problems in automobiles..
1> The rubber guard just under the hood near the windshield is approx 2" deep..
Why? To keep water form rain and whatever off of the engine...
2> How to remedy this! Cut from the center of that guard one inch deep and one foot to the right and left form center ! A good sharp knife will do!
3> You will now have a great vent space as most all cars do at that area!
4? No fear of water getting on the engine as the one inch left will keep the water running off before hurting anything!
5> After I was done, I sprayed water with as much pressure as I could on the windshield to be sure water is not getting on the engine! NOT A DROP!
6> I did this to my 2002 and it has not overheated since that process! Two years now! Cool!
#43 of 137 Re: It will always heat up [buddo9]
Aug 24, 2011 (11:07 am)
I read your previous posting and understand what you're saying, unfortunately it won't help me fix my engine problems now. We've driven our RDV for five years, and now are having overheating issues. If the rubber seal was the issue, I would think the problem would of presented itself prior to five years and 80K miles of daily use.
In addition to the heat buildup issue you are referring to, the gasket and coolant also have manufacturing or design defects that when put together, are causing the intake gasket to fail. If this was designed properly, there may not be a need to modify the rubber seal you refer to.
The bottom line lies with Buick/GM, the seal manufacturer and the coolant manufacturer. Someone should step up to the plate and take responsibility for the overheating issues without the consumers having to modify every vehicle produced, or if they want the consumers to re-engineer every car, they should pay us re-engineering fees. (which will never happen.)
Thanks for your input Buddo9, but my concern now is fixing the car my wife loves to drive on a daily basis (aka, fixing THEIR problem which has now become MY problem.)
#44 of 137 Re: It will always heat up [carshowpj]
Aug 25, 2011 (12:02 pm)
I apologize for your frustrations. Have you taken the vehicle into the dealer? Can you email me with your VIN and contact information so I can look into this further. I look forward to your response.
GM Customer Service