Question about GMC Sierra 1500

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Is it normal for antifreeze to drip out when changing exhaust manifold gasket on a 2001 gmc 1500 with the 5.3 ???

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No it is not. Sounds like a leaking intake gasket which most chevy's are notorious for. Thankfully companies like Fel-pro make a "problem solver" gasket, which will elimate the chances for the leak agin.

Posted on Mar 18, 2011

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I have a 1997 gmc sierra 5.7 vortec, just changed plugs and wires, now it hiccups at idle, And excessive white smoke and gas smellout the exhaust any ideas?


If you have white smoke out the tail pipe you have a problem with antifreeze entering the fuel system and burning with the fuel .
You see the white smoke isn't smoke its steam from the water in the antifreeze .
Witch leaves with 1 of 2 problems head gasket or intake manifold gasket .
Being that its a chevy engine I would say its the intake manifold they have had a problem with this disgin for over 30 years not enough bolts to much glue .
Over heat this engine once the glue melts and it starts leaking because of the pressure .
The bigger problem you have is if you run this engine the antifreeze will get behind the pistion rings any wreck the engine in under a month.
So do something quickly if you want to save it
Good luck

May 12, 2015 | 1997 GMC Sierra

2 Answers

1999 Nissan Quest has oil smell coming through vents when heater or defroster is turned on


Oil may be leaking from valve covers from brittle or old gaskets and is letting oil travel down to and on exhaust manifold or other hot spot where it is getting Burnt off. Or had recent oil change and oil was not wiped off and is still dripping to hot spot.

Jan 16, 2013 | 1999 Nissan Quest

1 Answer

Smoke under the hood


Could be alot of things but, here goes: Could be oil or antifreeze coolant dripped on the exhaust manifold; maybe steam rising from a broken or cracked hose or head gasket, or radiator cap gasket

Dec 31, 2012 | 1987 Chevrolet Blazer

1 Answer

Torque spec on exhaust manifold for 2000 yukon xl


EXHAUST MANIFOLD BOLT TORQUE 2000 GMC Truck Yukon XL 1500 2WD 5.3L SFI 8cyl The Exhaust Manifold Bolt Torque

Exhaust manifold bolts (first pass) 11 Lb/Ft.Exhaust manifold bolts (final pass) 18 Lb/Ft.Exhaust manifold nuts 39 Lb/Ft.Exhaust manifold stud 16 Lb/Ft.Air injection reaction (AIR) Pipe to exhaust manifoldnuts 18 Lb/Ft.(AIR) Pipe to exhaust manifold studs 4 Lb/Ft.Exhaust manifold AIR pipe studs 4 Lb/Ft.Note:To torque bolts and nuts, start in center usingcrisscross pattern working outward.

May 07, 2011 | GMC Yukon XL Cars & Trucks

2 Answers

2001 GMC Jimmy This just happened to me today. I have a 2001 GMC JIMMY that has 116,000 miles on it. I wsa driving on highway and tried to quickly accelerate by punching the gas. Just after this the car...


well sounds like u just blew a head gasket check ur coolant level or better yet put some antifreeze in it and let it run and see if u have an excessive amount of water coming out of the exhaust and keep check on the coolant level and see if u loose antifreeze as i suspect u will
and if u r loosing coolant then its probably not smoke u r seeing but steam instead

take it to a mechanic and let them check it

Jan 24, 2011 | 2001 GMC Jimmy

2 Answers

Blowing anitfreeze out the tailpipe. I know this means a head gasket. When the engine runs, it blows antifreeze out the passenger side of the engine at the exhaust manifold by the middle cylinder. Does...


could be just head gasket and bad exhaust manifold gasket (coolant leaks past head gasket into exhaust port then leaks out of exhaust manifold gasket)
or it possible that head is cracked too
Only way to know for sure is to remove head and inspect it

Jan 06, 2011 | 1986 Ford Bronco II

1 Answer

My friend works at a ford dealership and i took my 2000 gmc truck in because i had antifreeze on the intake manifold he said the type of antifreeze that was used in that time period would eat away the...


if in 10 years of driving ur truck this is the only problem u had with ur truck thats great as to antifreeze they all start to break down with age, good maintainance would be to flush and change antifreeze every 5 years it does pick up rust and oxidation , their caustic to certain metals, chevy had a problem in 2005 equinox with their dexcool (red)antifreeze eating away the in sides of the rubber hoses causing a smell(the hoses were a different compound than normally used )if ur gasket went it was probably due to age wear and tear driving conditions environment etc if what ur your friend was saying is right its so caustic that it took 10 years to eat thru a gasket at ur intake manifold and not the water pump gasket or heater core unit

Nov 04, 2009 | 2000 GMC Sierra

1 Answer

How do I replace the oil pan gasket on a 2001 GMC Yukon XL?


Changing the oil pan gasket on a GMC Yukon XL is realtively simple, but does require removal of the exhaust pipe. You will need a new oil pan gasket and a new exhaust pipe flange gasket.
Put the car on ramps or jacks to access the undercarriage.
Remove the exhaust pipe by removing the 3 nuts holding the exhaust pipe flange to the exhaust manifold. These nuts often rust and prior application of penetrating oil may be required to remove them without damage. Once the pipe is unbolted, work the exhaust system loose from the hanging brackets. In most cases the entire system does not have to be removed since there is enough room to remove the pan with only the front hangers removed.
Drain the oil from the engine
Remove the 10 mm bolts holding the pan to the block.
Remove the old gasket material and scrape any remaining gasket from the block and pan.
Install the new gasket. Forma-Gasket or a similar product may be used in small quantities to "glue" the new gasket in place and prevent shifting while the pan is reattached to the block.
Reinsall the 10 mm bolts in a cross pattern to ensure the gasket is compressed evenly. Do not overtighten the bolts.
Replace the pipe to flange gasket between the exhaust pipe and the exhaust manifold with a new part.
Reattach the exhuast pipe to the hangers.
Install the 3 bolts connecting the pipe flange to the exhaust manifold.
Fill the engine with oil.

Sep 15, 2009 | 2001 GMC Yukon

3 Answers

1999 suburban usung a lot of antifreeze


Some of the V-8 engines like to leak out the back of the intake manifold. It then drips onto the exhaust and evaporates so you never see it, you just smell it. Look for it back there. You may want to have the system pressure checked too. If it is leaking out the intake, it is not an easy or cheap fix. I just did my 96 Yukon and it was not fun.
Good Luck and hope this helps.

Mar 29, 2009 | 1999 GMC Suburban

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