Originally Posted by paug01
Hello again, I replaced the lower and upper gaskets today. Just like you guys said the lower gaskets were blown out at the coolant passage seal on both banks,used all GM oem parts cause I have a friend that works in parts at a Chevy store. Also changed the oil and cleaned out the throttle body. Did the job at work today on my day off,much easier with a lift and all my tools. Took about 3.5 hours to complete,it was much easier than resealiling a Nissan lower intake! Thank you guys for all your help and advice,much appreciated!
When you say you used all GM OEM parts what exactly do you mean?
You did not put the same style plastic/nylon framed gasket back on there did you?
If so I suggest you tear it back down and replace it with the aluminum framed Fel-PRO or AC Delco LIM Gasket.
And if you used the same style plastic coolant elbow, when you replace the LIM Gasket I'd use the aluminum coolant elbow.
I have heard of the plastic LIM Gaskets failing on some people as low as 30-40k miles, mine made it to 133k though.