Anyone Replaced Your Intake Gasket Yet?
badlanz
08-05-2004, 03:19 PM
I'm sure some of you have heard about the problem with the 5.7 vortecs intake gasket developing a leak on the corners of your intake causing a vacuum leak and antifreeze to leak out. MY '99 had 40,000 miles on it when my GM dealer noticed it(obviously past their weak 35,000 mile warranty). The antifreeze reservoir was dry and they said the intake gasket needed replaced. The cost for them to fix was around $600.00. I finally replaced it when it reached 63,000 miles, because the antifreeze was developing a pool underneath the engine everytime I shut it off. I took it to a friend of mine who is a mechanic and he says he'll be replacing them for a long time. His cost was $350.00. After it was fixed, it definately has better power.
Is there anything that can be done to get GM to re-imburse me for their engineering screw up? I'm sure there are thousands out there replacing their gaskets right now.
Please respond to all that have had this repaired. THX!
Is there anything that can be done to get GM to re-imburse me for their engineering screw up? I'm sure there are thousands out there replacing their gaskets right now.
Please respond to all that have had this repaired. THX!
nick0750
08-08-2004, 09:56 AM
for one its not a screw up and for two its not a common problem, all intake manifolds are going to leak at some point gm will absolutely not reimburse you, you are way past 3yr or 36,000 miles.
70camaro
08-08-2004, 12:29 PM
Well Nick, that was helpful. :rolleyes: You say its not a common problem, then you say they all leak... Well, which is it??? As far as problems go, it is fairly common. And no, not ALL manifold gaskets leak! I have had many chevy 350s that never had an intake leak. At least not to the point where its a problem like these ARE. You obviously have no idea what your talking about. If you do a search on it you would see many people have had the same thing happen to them. I am not saying it is a design flaw, but many have the same leak. I do too. Thats why we call it a PROBLEM. No GM will not fix it, I'm not saying they should. But in a world where 10 year, 100,000 mile warrantys are not uncommon, 3-36 IS pretty lame. I'm sure you have had, or will have, some problems with that P.O.S.-10 you've got. :loser:
BadlanzHPE
08-09-2004, 10:14 AM
I have been told by numerous mechanics that the intake gaskets were too thin. The intake only has 4 bolts which normal small blocks have 12 bolts. This obviously is either a design flaw (not enough bolts for proper seal) or a gasket problem (which it must be since the new gasket solved the problem. If you haven't replaced yours yet, you will. Just check your antifreeze reservoir to see if it is dry.
I still feel GM should re-imburse me for labor expense. If anyone knows who to contact about this please let me know.
I still feel GM should re-imburse me for labor expense. If anyone knows who to contact about this please let me know.
GMCTech
08-10-2004, 05:34 AM
I've got to throw in my :2cents:
The intake gasket leak is very common, and at least half of every old style Vortec motor can expect to get them replaced before 100k miles.
I have replaced too many to count over the last few years, and told twice that many customers that didn't end up having them fixed.
I can guarantee you that if you look at any truck that has more than say 40k miles on it, there will be evidence of leaking at the front seam or rear seam where the intake meets the block.
The term intake gasket is misleading though. Most of the time it is not the intake gasket itself leaking, but the sealant that GM used to seal between the intake and block.
The only reason that I can think that this happens is that you are dealing with two different materials, aluminum and cast. The sealant was designed for one or the other but is not best suited for both.
When we replace the "intake gaskets" we are sure to torque them properly (another common cause for leaks), and we use a sealant called T-95 by International that works awesome on ALL materials.
I have yet to see a repaired set of intake gaskets leak.
Sorry so lengthy, more like my :2cents: :2cents: :2cents: ,HUH?
Hope this helps.
The intake gasket leak is very common, and at least half of every old style Vortec motor can expect to get them replaced before 100k miles.
I have replaced too many to count over the last few years, and told twice that many customers that didn't end up having them fixed.
I can guarantee you that if you look at any truck that has more than say 40k miles on it, there will be evidence of leaking at the front seam or rear seam where the intake meets the block.
The term intake gasket is misleading though. Most of the time it is not the intake gasket itself leaking, but the sealant that GM used to seal between the intake and block.
The only reason that I can think that this happens is that you are dealing with two different materials, aluminum and cast. The sealant was designed for one or the other but is not best suited for both.
When we replace the "intake gaskets" we are sure to torque them properly (another common cause for leaks), and we use a sealant called T-95 by International that works awesome on ALL materials.
I have yet to see a repaired set of intake gaskets leak.
Sorry so lengthy, more like my :2cents: :2cents: :2cents: ,HUH?
Hope this helps.
stubbornmike
08-17-2004, 07:55 PM
My engine was leaking interally so you couldnt see the coolant it was leaking into cylinder # 5 and you couldnt tell except for the missfire at idle and losing coolant. He also said that hard water and the coolant will eat and corrode the sealant. The Master tech advised to replace the coolant and have it flushed every two years rather than what gm recomends. Besides that its cheapier to do a coolant flush at 80. than a intake gasket at several hundred.
Bry73
09-23-2004, 10:05 PM
I have a 99 Yukon 110k on it and I just had the same problem. Intake gasket leak. They fixed the leak I paid him $800(I had the distributor cap, rotor, plugs and wires changed as well).
gave me the truck back. When I started the truck it idled really rough. When I accelerated the truck would vibrate badly and seems to have lost a lot of horse power. The service engine soon light came on, it would also flash on and off. So I brought it back to the station. Hooked the computer up to the truck, came back as a misfire in cylinder #1. The mechanic says now it could be the spider.
So my question is what’s my recourse? When I brought the truck in it just had a leak and ran great. Now it’s running terrible. Should the mechanic have to flip the bill to get the truck back to the way it ran when i brought it in?
gave me the truck back. When I started the truck it idled really rough. When I accelerated the truck would vibrate badly and seems to have lost a lot of horse power. The service engine soon light came on, it would also flash on and off. So I brought it back to the station. Hooked the computer up to the truck, came back as a misfire in cylinder #1. The mechanic says now it could be the spider.
So my question is what’s my recourse? When I brought the truck in it just had a leak and ran great. Now it’s running terrible. Should the mechanic have to flip the bill to get the truck back to the way it ran when i brought it in?
markdpro
09-26-2004, 10:25 PM
I'm sure some of you have heard about the problem with the 5.7 vortecs intake gasket developing a leak on the corners of your intake causing a vacuum leak and antifreeze to leak out. MY '99 had 40,000 miles on it when my GM dealer noticed it(obviously past their weak 35,000 mile warranty). The antifreeze reservoir was dry and they said the intake gasket needed replaced. The cost for them to fix was around $600.00. I finally replaced it when it reached 63,000 miles, because the antifreeze was developing a pool underneath the engine everytime I shut it off. I took it to a friend of mine who is a mechanic and he says he'll be replacing them for a long time. His cost was $350.00. After it was fixed, it definately has better power.
Is there anything that can be done to get GM to re-imburse me for their engineering screw up? I'm sure there are thousands out there replacing their gaskets right now.
Please respond to all that have had this repaired. THX!
Yes I think it is poor design too. 50cents worth of goo cost me $1000 to fix. While we're on the topic how about the GM oil lines that fail where the rubber meets the aluminum and the "quick connect heater hose that corrodes and cost labor time to replace.
If you got a fix, you are among the lucky. My truck has never run right since the dance with the dealer.
Is there anything that can be done to get GM to re-imburse me for their engineering screw up? I'm sure there are thousands out there replacing their gaskets right now.
Please respond to all that have had this repaired. THX!
Yes I think it is poor design too. 50cents worth of goo cost me $1000 to fix. While we're on the topic how about the GM oil lines that fail where the rubber meets the aluminum and the "quick connect heater hose that corrodes and cost labor time to replace.
If you got a fix, you are among the lucky. My truck has never run right since the dance with the dealer.
2kflhr
11-30-2004, 05:41 PM
for one its not a screw up and for two its not a common problem, all intake manifolds are going to leak at some point gm will absolutely not reimburse you, you are way past 3yr or 36,000 miles.
Nick,
You need to do your homework before making a statement like that. I too had to replace my IM at 48k and again at 49k (due to poor workmanship).
The dealer himself admitted that they had a rash of IM coolant leak failures.
Nick,
You need to do your homework before making a statement like that. I too had to replace my IM at 48k and again at 49k (due to poor workmanship).
The dealer himself admitted that they had a rash of IM coolant leak failures.
Mr. Peabody
12-06-2004, 04:00 PM
I had it replaced on my 96 at 120K too bad it didn't happen during my extended warranty. Also for the record I'd like to say that I have a 96 SLE loaded 4x4 with 130K that other than the fuel pump & then the pump relay has never given us a lick of trouble.
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