Question about 2000 GMC Envoy

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Replace head gasket (RB)2000 GMC ENVOY

How much will a shop charge to install a new right bank head gasket
(gasket leaking antifreeze externally) on 2000GMC Envoy w/V6 ?---- and how much more to install the left bank gasket while everything is opened up?
yohojoe

Posted by yohojoe on

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Michael C. De Vito

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Mcdevito75 here, That"s an expesive job approx. $500.00--------$800.00

Posted on Jun 18, 2010

  • Michael C. De Vito
    Michael C. De Vito Jun 18, 2010

    mcdevito75 here, Up--date on your problem, Never heard of a cylinder head gasket leaking outside the engine, the cylinder head has freeze out plugs just as the block does, 1 of them is most likely leaking and not the head gasket.

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1 Answer

Overheating


You need to find out if the leak is internal or external to the engine. There is a tool called a Radiator pressure checker and it works similar to a bicycle pump. Special fittings replace the radiator cap and you observe the pressure rating of the system when you add pressure.

If the leak is significant this test will spill the antifreeze from the leak. In difficult cases, an additive leak detection chemical can be added to detect a leak with an UV light.

If not successful you will need to pressurize the system and observe for pressure drop. This would mean the leak is internal like a bad head gasket. At best, you can diagnose which side (bank) of the engine needs to have its head gasket replaced by removing the spark plugs and cranking the engine to spray out the antifreeze from the problem cylinder. Again, a chemical dye and UV light would be helpful.

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1 Answer

I am losing antifreeze no leaks and white smoke


White smoke means the car is burning antifreeze, along with gas. One of your head gaskets has blown out and will have to be replaced. Also the cause for overheating. A block test or compression test will confirm it, and tell you which head gasket is out, whether left bank or right bank of engine.
Sorry for the bad news, ft, cylinder head repairs are expensive.

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Can a head cylinder on my envoy bend?


yes it can a machine shop can repair this problem ask a auto parts store better with a local one than a box store one you can also get a remain head get new head bolts as well

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1 Answer

Shop hours to change right bank head gasket- external coolant leak is simptem


It's about 10 hours. But you find a shop that will do one side. I wouldn't. And depending on the miles you might not want to do it at all. When you do one side you stand the chance of have compression difference , and this will cause vibration in the engine. And if you have high miles, Say 200,000+, you stand the chance that the heads are sealed and blow out the rings on the pistons. This causes burning oil (smoking) and oil leaks, because the compression is blowing in the crank case. Add about 4 hours to do both sides

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I have a 2005 pontiac gxp that has been using oil and antifreeze but I checked the antifreeze and there are no signs of oil and also the oil dipstick has no antifreeze on it either.....I used about 3...


If you have the V-8 Engine, just totally disregard this post.

If you have the 3.8L V-6 engine, your oil consumption problem is most likely to be caused by the PCV Valve if you cannot find any external leaks. These are also known for the upper intake plenum leaking antifreeze. The ports in the manifold that go to the throttle body are made of very thin plastic. The EGR tube, with its hot exhaust gasses, goes right between them. This causes the plastic to heat up and crack, causing an antifreeze leak that goes directly into the intake and gets burned in the combustion chambers.

DORMAN makes a replacement upper plenum kit to fix this problem. The kit includes the upper plenum with thicker coolant passage walls, an intake manifold gasket set, a smaller-diameter EGR orifice, and a new PCV Valve. This kit will probably fix BOTH of your problems.

The DORMAN part number for your car is 615-180 Shop around...prices vary considerably.

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Hi my gmc envoy 05 i check the radaitor i see that have an oil.so what is the problem we have a leak?


There has been a problem with the Dex cool orange antifreeze deteriorating the upper and lower intake manifold gaskets, causing coolant to leak in to engine.If there is antifreeze in your oil, it will ruin your engine. If you find antifreeze in the oil it will cause the oil to become thick and frothy and will not lubricate the bearings and other moving parts, causing an engine failure. If there is evidence of coolant in the oil, do not drive the vehicle. Have it towed to a repair shop and have the gaskets replaced, oil and filter changed, cooling system flushed and refilled with GREEN antifreeze that is compatible with aluminum radiators and engine parts.

Dec 29, 2010 | 2000 GMC Envoy

1 Answer

We have a 2003 gmc Envoy V6 4X4 Automatic has 108000 miles on it i see that the hose was replaced going to the radiator we smell antifreese under the hood and having to put anti freeze in the over flow...


Well, the fluid from the radiator could be evaporating. Is the upper hose solid when you shut it off?

If you 'smell' antifreeze there 'is' a leak.

Is the fluid 50/50 strength antifreeze to water?

Usually, if there is a leak, it will drip to the ground or come out of the tailpipe (in the case of a bad head gasket).

It is not unusual to have a car with 108,000 mi. to have a leak somewhere.

Keep looking and topping off the fluid.

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2 Answers

Coolant is leaking like a sive fromt he head gasket, how hard is this to fix?


If you have no damage to the heads, like warping, it is not to hard. Requires removing the heads putting a new gasket on and put the heads back on. Make sure you torque the bolts to the right torque according to the factory specs. Do not reuse the head bolts. Wouldn't hurt to take the heads to a machine shop and having them cleaned and rebuilt.

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1 Answer

HELLO,MANE IS SY,I HAVE 2000 PARK AVENUE ULTRA SUPPER CHARG.LOOSING COOLANT NO LEAK SLIGHT SMELL ANTI FREEZE IN THE VEHICLE.IS IT NORMAL HEAD GASKETS PROBLE AT 240,KM? IS THERE ANY PROCEDURE THAT I SHOULD...


If you smell antifreeze in the vehicle it is most likely your heater core that is leaking.Look under the dash on the passenger side to see if there is any antifreeze on the botom of the heater box or under the carpet.

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1 Answer

Head gasket blown


there are many was a head gasket can blow . sometimes they just leak to the outside sometimes they leak to the coolant and then it blows out your antifreeze. if you have a blown head gasket you will see it when you pull the head. and yes you should hace the head checked at a machine shop and install with a new head set never reuse a gasket .
later paul

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