How To Change A Bad / Blown Head Gasket 3400 GM Overheats Thermostat Intake Manifold No Heat 3.4

Tried bleeding the air from your 3400 GM engine and it still overheats? Bad news. May be the head gasket or lower intake manifold gasket. Here are a few checks you can perform to find out where the problem may be. Signs of a bad intake manifold gasket. Leaking antifreeze behind the power steering pump or by the water neck / thermostat housing. Out the sides of the intake gasket. Milky oil, water coming inside the crankcase mixing with the oil turning it into a milkshake. Signs of a bad head gasket. You pull the radiator cap off when cold, you rev up the engine and fluid shoots out the neck with force. Exhaust gases pressurizing the coolant. Also a tell tale sign is while the engine is running the overflow bubbles consistently. Try and bleed the air out with the bleeder. You get fluid coming out and tighten it back down. Soon after you lose heat inside and need to bleed the air out again. After the car has warmed up and shut off, you hear a hissing noise. From the coolant or gasses coming out then will slowly hiss quiet until the pressure is relieved. Can't go over every scenario. Just ask questions here and we'll see about finding out the solution. tags: Chevrolet 3100 3.1 3400 3.4 Liter engine motor over heats overheats thermostat water pump gasket head intake manifold no heat water coming out overflow over flow how to change fix repair GM instructions VT247

Comments

Joe Bartley: 780 inch pounds am I ok with the head bolts?? I did that exact pattern you did

Joe Bartley: I'm doing a head gasket job on a 03 buick rendezvous is I had to use inch pounds CAUSE of my wrench is inch pounds I did 65 foot pounds stepped it up during the processing is that over torqued?? I watched your video!! Btw it's 24 foot pounds for rocker arms umm I hope that 65 is right I understand the math when it comes to degree adding but I watched your video SPECIFICALLY there's differences but the same procedure I hope you reply thanks !!

Anthony Plascencia: So what does it mean if the liquid in my coolant reservoir turns brown and starts bubbling? I just changed the water pump a few weeks ago

eric santana: Around 20:05 that black metal tubing that goes to the heater core that’s attached to the water pump how did you get that out from the line that comes from the fire wall?

Slick Ratchet: I've got to do this today😞😢

fred fairchild: I'm facing an identical job on my Rendezvous and I was going to give this video a thumbs down based on the fact that nothing was shown to be done, the video just cut to it already done. THEN I saw the heads out with the manifolds still attached and that idea made my task A LOT easier. It never occurred to me to do it this way. Priceless.

Jason Windsor: Air compressor alarm at 18:00 hahaaa we have the same thing happen at random here...effing brown note :)

TY for the video! I may take time and put a timeline list together for the order of when parts are removed.

Like pulling the power steering pump is tricky on a 99 Pontiac Grand Am if u do it before pulling the back fuel rail..or both rails with intake in this case. Had to jack the engine up for support at that point and then during pump removal had a pull and twist the entire pump CLOCKWISE a little (maybe to 1 or 2 o'clock) during removal for clearance. No we didnt support it first think I know lol but yeah little tricks to learn and add for the next mechanic ;)

Cotters Church Supplies: Could someone please confirm that the A/C compressor has to be removed in order to replace the head gaskets? doing a preliminary look around in my 01' Aztek, it seems that the A/C compressor and hoses are out of the way around the block. Otherwise, to do it properly you would need to first take it to mechanic to discharge the Freon and then pay to test and recharge it. ...TIA.

mackallen21: have a 2002 buick rondevouez 3400 can a blown head gasket make it miss and the rpm barely go up and down

Thad James: I started to do this on my own.. Question. Why would i have to send the heads to a machine shop like my brother inlaw told me?

RobbPaulz: DOES THIS JOB REQUIRE ANY SPECIAL KNOWLEDGE ABOUT PISTONS AND SUCH OTHER THAN THE TORQUE WRENCH AND I GOT A SPECIAL ROD PULLLER FROM LISLE TOOLS. I AM DOING THIS MID WINTER WITHOUT A GARAGE. THIS IS GOING TO STINK TO HIGH HEAVEN MAN. A LITTLE BIT A DAY AND I CAN GET IT IN A WEEK I'M THINKING.

Jinzi: How does this vary from an 03 grand am? I notice the placement of the battery and reservoir for example are different..

How or does this affect the job?
thanks

James Waid: How did you get the left motor mount off?

SW Outdoors: I just found this video I have a 03 rendezvous , it seems to run just fine BUT it doesn`t really have heat works sometimes most of the time it don't. I have just started smelling something like its over heating but the gauge shows its all good never goes past half way really sometimes just sitting at a light it will move up never in the red . any thoughts on this smell . after seeing this video I am thinking maybe it could be the same thing but I don't know I am clueless in this matter. please get back with me if u will please , good video seems easy enough to follow but I will just have to have some one else do it lol this is so far above my head . TY

Michael Heard: oh and how much more work is replacing the timing belt?

anonov1: I have to say this is a good tutorial on the 3.4. Your commentary is quite listenable. ....if that's a word ? I have retired after 50 years, man and boy in the trade and am SO glad I am not doing this any more. Well done that man !...apart from the use of the word "Issues"...You have problems, not 'issues' !

Bobby Harbin: Awesome. Thanks for the Vid

Kirsten Hesse: If the head gasket is bad will ur oil alway be milky

crewof8: thermometer? really.. I'm a female and know it's a thermostat....

Steven Eli: hey. im doing head gaskets on a 02 rendezvous right now. almost got the heads out. wondering do i need to bring them to a machine shop n have them resurfaced or is that just if they're real pitted? appreciate the video.