Question about 2000 GMC Sierra

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Our 2000 gmc 2500 7.4 engine the antifreeze runs between the valve cover and the intake cannot find where fluide come from, check hose fitting, help

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Hello, i had a 1997 chevy dually, had same problem, the way gm changed their clamps for hoses, now the clamps sorta hold their self, there made of plastic, and they slip into each other, they are like male and female connections, they slip into each other, i would check all radatior hoses, heater core hoses, i had 6.5 turbo diesel, great motor, only thing is the clamps for heater hoses was plastic, just like on the rocker arms, on the 6.5 they have a nylon plug that holds rocker arms in place, keeps them moving from side to side, they have to be changed at least, 150,000, mine broke off, had to replace 2 pistons, pushrod came out went into motor and broke the skirts off two pistons, very expensive, i would check all clamps with the plastic male to female, ends, maybe that will help, also check thurmostat cover, been known to leak a little too.

Posted on Feb 01, 2010

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Where is the thermostat in my 95 Isuzu rodeo 3.2 ltr. V6


where is such a simple word
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asked many time here, and same answer.
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3500 silverado 5.7 runs idles rough but smoothes out at higher rpm's


The age of your vehicle guarantee's a vacuum leak. It may sound silly but the truth is rubber grommets and hose's shrink and dry out over time and the harsh environment under the hood makes it worse. Check all vacuum lines and fittings attached to the intake manifold, valve covers(pcv valve), and be sure to check for a vacuum fitting on top of the intake just behind the throttle body. Does it fit tight in the hole? You can seal loose fittings with a high-temp RTV (Red) silicone sealant/adhesive. Several small leaks add up and your engine, heat/AC, will be all to glad to tell you about it.

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How to remove radiator cover to add antifreeze to radiator


Your vehicle is equipped with a surge tank. There is no opening in the radiator itself. To check or add coolant (antifreeze) to your cooling system, screw the cap off of the surge tank.

CAUTION: Do this only when the engine is cool.

This is covered on page 5-26 of the 2004 GMC Yukon Owners Manual.

To download a free PDF version of the 2004 GMC Yukon Owners Manual click here

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1 Answer

2003 gmc 2500 hd has spark has 60lbs fuel pressure has compression tried starting fluid won't start


Hi, at this point, I usually see if I can check valve timing without tearing the engine apart. Unfortunately, with a pushrod gasoline engine, which I'm thinking you have, the timing marks are just above the crankshaft. This requires removal of the crank pulley and damper to access the timing cover. :o(
It may be easier but not as definitive to pull off the bank 1 valve cover to see how late after #1 TDC (exhaust stroke) the intake valve is opening. If it's not opening right after TDC, the cylinder will not take a fuel/air charge. Please let me know if you have questions, and thanks for using FixYa.

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Feb 05, 2011 | 2003 GMC Sierra 2500HD

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Where is the ect sensor on a 2000 GMG Jimmy V-6 4.3l


Its located under the base of theromastat in the front of the engine intake manifold left of the EGR valve where the upper radiator hose fitting is bolted to the intake manifold

Dec 24, 2010 | 2000 GMC Jimmy

1 Answer

I need the location of PCV valve on my 2004 GMC 2500 6.0 engine.


Most pcv valves are stuck in the rocker cover, with a hose attached to it. There isn't much to them, a rattling ball valve, about 2 inches long, 1/2 wide.

Jun 30, 2010 | 2004 GMC Sierra 2500

1 Answer

Recently I had my 2000 gmc 2500 6.0 liter truck start running rough. I changed the spark plugs, checked the coil packs and replaced the fuel pumpand fuel filter. Still no change....Any suggestions?


ROUGH IDLING CAN BE CAUSE BY MANY THINGS.I AM LOOKING AT LEAKING VACUUM HOSES OR INTAKE MANIFOLD GASKET LEAK.DIRTY FUEL INJECTORS AND WORN ENGINE VALVES WILL CAUSE ROUGH IDLING.ALSO LOW IDLE SPEED CAUSE ENGINE TO RUN ROUGH.

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2 Answers

Coolant leak at intake 1994 Buick LeSabre 3.8 ltr


There are several areas of possible leakage. One is the hose and plastic outlet from the intake manifold on the passenger side of the engine. The hose runs low, underneath the alternator. The plastic outlet cracks, the hose gets old, the clamps on the hose can also be loose. The replacement outlet from the dealer is steel, not plastic.
Another possibility for leakage is on the driver's side of the intake manifold. Underneath the air inlet is a metal cover on the end of the intake manifold. This covers the coolant passages at the end of the intake. Mine was oozing antifreeze..you don't have to pull the intake to replace this.
The other place for leaks is the intake itself..requiring removal of the intake. I've done this...I don't think it is that bad of a job. However, if you put in a new intake, don't forget to put in a pcv valve..it fits under a small cover at the right rear of the intake manifold.

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1 Answer

2000 GMC SIERRA 2500 LIFTER NOISE


Try a cup of tranny fluid, Dextron, or whatever, in the crankcase. Or there are lots of lifter products at your local part store. I would certainly try that first. I assume your oil has been changed recently, and the level is good. You don't have to pull the heads, but you do have to remove the intake, and valve covers.

Sep 03, 2009 | 2000 GMC Sierra

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