I have a 1997 Z71 with 85K miles. It has been leaking antifreeze. It seems to be off to the side not under the water pump. So, I think it is not the water pump. A mechanic told me that the newer GMC vortec engines have a flaw in the intake manifold (a plastic seal)and that is where my leak is at. The antifreeze eats up the plastic and forms a leak. Has anyone had this problem???? I do not know if I should trust this guy or not.
well, its not the manifold, its the fittings on the end of the coolant lines. my dad just had to replace both of em on his 95 tahoe. ive heard of lots of others have to do the same thing. where the lines go into and out of the water pump, each fitting is very prone to breaking and leaking. best thing to do is go to an auto parts store and have them make you a normal one on the end of a section of hose
* Earnhardt Forever *
89 Chevy K1500 - 350TBI/700R4/NP241 - 3" lift - 33's - other goodies, but not enough! [img]/wwwthreads_images/icons/tongue.gif[/img]
dude, i didn't feel like taking all that stuff off, so i went to auto zone and bought radiator stop leak made by coastal lubricants and dumped it in. it leaked for a about a day after, and then it quit. that was in december of last year, not a leak yet!
the cheapie way!
I have a 96 Vortec and had some pretty bad luck in the anti-freeze department.First around 40,000 I lost the coolant fan, then about 8000 after the water pump went. Then to top it off at 55,000 the intake gasket decided it was time to create a nice weekend project and start leaking.So it could be anyone of these problems. I also seen the heater Quick connect brak at the water pump on a 95. The intake gasket is plastic with a rubber seal around the coolant passages. It looks like the rubber splits. Bad design or bad material I do not know. Will have to wait and see how long the aftermarket gasket lasts. So my suggestion is if you do not trust this guy get a second look at it. Hope this helps.
84 Xtra cab(looking for trail 4runner)
Today I got a few other opinions and they say it is the gasket. Just my luck. I hope to go to Colorado Sat. to camp and do a little off road mountain pass driving. We shall see if it can be fixed this quick. thanks for your post.
I had two of those crappy quick connect heater hose fittings go bad on me[img]/wwwthreads_images/icons/mad.gif[/img] The first one broke off in the manifold when I tried to take it off[img]/wwwthreads_images/icons/mad.gif[/img] The second time it happened I replaced it with a good old-fashioned hose fitting[img]/wwwthreads_images/icons/cool.gif[/img] End of problem. If I had known then what I know now I would have replaced it with a regular hose fitting before it corroded and broke on me.
[img]/wwwthreads_images/icons/wink.gif[/img]Somebody once said "Go Big" . . . Well we're goin' Full Size[img]/wwwthreads_images/icons/wink.gif[/img]