Question about 1994 GMC Sonoma

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94 GMC sonoma needs head gasket

Currently slow leak, no water in oil yet. 4 cyl, 2 WD, manual, looking for pitfalls before I dive into this repair. Thanks!

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  • Anonymous Mar 12, 2014

    changed head gasket on 94 honda accord and water still getting in the oil

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No real pit falls just drain coolant remove head have head checked at machine shop. Clean engine surface good and rise good with brake clean, make sure head gasket is on correct before head goes on bolt down with proper torque and sequence then finish up then drain oil.

Posted on Jan 17, 2009

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How do I remove oil pan on a 2001 gmc Sonoma pick up truck to replace gasket


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Mar 18, 2011 - How to change oil pan gasket for 2001 sonoma, can i get away with just raising the engine two inches to ... 2001 GMC Sonoma • 4 cylinder 2WD Automatic • 150,000 miles ... You need to remove the engine to get the sump off.

Nov 28, 2015 | GMC Cars & Trucks

1 Answer

'94 Gmc Sonoma 4.3L Starts loosing Power and making weird Rattle Noise when reaching operating temperature. Also water tank looks like there is a bit oil in it. Could it be the cylinder head gasket?


Oil in the coolant is usually an intake manifold gasket problem on these engines. If a head gasket failure the engine will normally overheat and give erratic temp guage readings. Make sure the oil level is full. Is the rattle noise coming from the engine? Some times the exhaust (converter) will fail and the catylist will seperate causing a rattle noise from the exhaust and plug it up giving a no power situation

May 23, 2015 | 1994 GMC Sonoma

2 Answers

Gmc Sonoma 94 losing water no leaks not in oil or on floorboard. New water pump. New radiator cap.


your leak is likely in head leaking into the spark plug ignition area and burning of once vehicle is running check plugs for moisture before motor is hot, also can seal using blue rhino at auto zone I used on 6 vehicles and sealed all of them.

Oct 20, 2012 | Cars & Trucks

1 Answer

Radiator fluid reserve is empty every few days, can smell it but do not know where it is going?? no fluid on ground.... checked oil and oil looks fine


  • Is the passenger side floorboard damp at all? When you put the defrost on do you smell antifreeze real bad? Windows fog? This would be a sign of a heater core going bad. A lower intake could have a leak too. Sometimes they leak slow and not all over so to speak. This can also cause a sweet smell in the cabin as well. Since you said the oil looks good we can leave out a cracked head, cracked block or bad head gasket.

  • Hope this helps.

Oct 28, 2011 | 1997 GMC Sonoma

1 Answer

HOW HARD IS IT TO REPLACE A HEAD GASKET ON A 2002 4 CYLINDER GMC SONOMA?


its not hard, but you need the right tools, procedures, you need to know what you are doing. You also need to repair why the head gasket is blown. You will need the head checked out at a machine shop, it may be warped.

Nov 19, 2010 | 2002 GMC Sonoma Extended Cab

2 Answers

Good day all i need the firing order for 94 sonoma


If you have the 4 cyl. it is 1-3-4-2. If you have the 4.3 V6 it is 1-6-5-4-3-2.

Dec 06, 2009 | 1994 GMC Sonoma

4 Answers

I have a 1994 Gmc Sonoma that overheats and i dont know why. Today, i started it up and it runs perfect. My temp. gauge doesnt move and i replaced the thermostat about a week ago. Also when i parked it...


could have a blown head gasket or cracked head or worse case scenario, a cracked block letting oil into the combustion chamber and out the exhaust. if it is letting coolant into the oil then pull the dipstick and there should be a milky white look to it where the oil tried to mix with the coolant. but its normal to have water alone drip from the drain hole in the exhaust from condesation. for every gallon of fuel your vehicle uses, it produces about a gallon of water thru the exhaust

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1 Answer

1996 gmc sanoma cyl head 4 cyl


On the side of te head above the # 3 spark plug check to see if ou have a frost lug there in the head, Also check if there are any heater hoses in this area to be sure that they are not spraying antifreeze from a pin hole. Before you go and buy a new or used head be sure that the head is the actual problem, it could be as simple as a head gasket. Also check to see if you have white smoke coming out of your exhaust as this is a tell tail sign of a head gasket.

Oct 26, 2008 | 1996 GMC Sonoma

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