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  #85  
Old 09-03-2012, 12:38 AM
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Re: 11 Grand Cherokee Needs Head Replacement?

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Originally Posted by hammer1234 View Post
Is there any information on what the problem is with the cylinder heads and what is different about the replacement ones? Guess I'm wondering if the repair will fix the issues for good.

Early 2011 build with over 26K, so far not seeing any problems like this, fingers crossed. Planning to get an extended warranty but I'm guessing that this issue is being covered under the powertrain warranty.
I have a 2011 gc 3.6 with about 20,000 miles on the clock, so far so good. i bought it in july of 2010 as soon as they hit the dealers.
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  #86  
Old 09-03-2012, 02:14 AM
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Re: 11 Grand Cherokee Needs Head Replacement?

You can download the warranties at www.jeep.com/crossbrand/warranty/?brand=J
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  #87  
Old 09-09-2012, 01:07 AM
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Re: 11 Grand Cherokee Needs Head Replacement?

I have a 2011 gc with a build date of 6/2010. Has anyone heard of an early build gc having this head problem? Most forums i've read have been late 2011 builds or 2012 models.
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  #88  
Old 11-05-2012, 01:28 PM
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Re: 11 Grand Cherokee Needs Head Replacement?

Just talked with a Tech on a test drive this morning...he's worked on a number of these head replacements and was surprised to see my GC with over 33K miles without the issue. For them it's to the point where if they see the CEL and it's a misfire they just order the replacement parts and fix the problem.

FWIW with the exception of the head issue he said he usually doesn't see too many problems with the GC, just does a lot of maintenance work.
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  #89  
Old 03-26-2013, 10:05 AM
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Re: 11 Grand Cherokee Needs Head Replacement?

21K miles, CEL intermittent this week.

Head replacement repair in process. Dealer has the part in stock, needs 10 hrs to replace, but Jeep not back before Thursday.
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  #90  
Old 03-27-2013, 02:00 AM
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Re: 11 Grand Cherokee Needs Head Replacement?

I have a grand cheerki 2012 3.6L I face the same problem in KSA which is misfire in cyl 6 and l went to the dealer and it took two month too fix this big problem now my car is in a good condition
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  #91  
Old 08-08-2014, 06:49 PM
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Re: 11 Grand Cherokee Needs Head Replacement?

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Originally Posted by hammer1234 View Post
Am I reading it correct then that is this a manufacturing defect? Has there been anyone with early 2011 builds that is affected?

Guess I'm a little sensitive because years ago I had a Ford Explorer that developed a cylinder head crack at 15K miles...got it replaced under warranty but it shook my confidence in the long-term reliability of the engine. Got rid of the vehicle at 120K because it was starting to burn a lot of oil and because it was going into the shop every few months for something major.
I have a 2011 JGC that was built in November of 2010, and I have 46,000+. I am the second owner, and bought it when original owner traded it in just before 36,000 mile was to expire. Jeep extended the 100K warrantee to me, as well as my in-laws who have a Pentastar in their Dodge minivan. Neither of these early builds seems effected as of yet. I bought a service contract and have a few thing swapped out, like HVAC blower and a wheel sensor., but nothing major. I was about to do a coolant drain and re-fill using the Prestone ethylene glycol with corrosion protection. apparently all engines that are aluminum allow are having corrosion problems and this is a known trade off for weight and, its why they don't like to put the newer 100K coolant in the engine. If you want to avoid as much problems as necessary flush your fluids on a regular basis, a bit more than recommended in the owners manual. Same for brake fluid and I couldn't find the fluids for 4WD listed with any mileage in the manual, other than inspection, I switched out my differential and transfer case a few weeks back. I will do the transmission at the normal schedule, because tranny problems can be a nightmare. If its not broke, don't mess with it, on most transmission issues.
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Old 08-10-2014, 05:44 PM
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Re: 11 Grand Cherokee Needs Head Replacement?

Is the correct coolant not HOAT ?
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  #93  
Old 08-10-2014, 06:30 PM
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Re: 11 Grand Cherokee Needs Head Replacement?

It is Mopar's version of HOAT. Mixing can be a problem as each manufacturer puts different additives which can cause a problem. I decided to take it to the dealer to have done, and I think using distilled water will help as its the corrosion from the Ethylene Glycol and the silicates that wear things out. It should just be done more frequently to keep the internals with less wear. My mechanic FIL, says that the liquid will keep the engine from freezing for many years, its the corrosion that isn't so good.

HOAT is better than the alternatives, though they may work fine, if you flush the whole system and only use one type. Mixing is the problem and with them extending the left head warranty through 100K, I don't want any fluid changes messing that up.
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