Coolant leak on a 1999 Pontiac Grand Am GT V6?

James Kennedy

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Im doing a complete upper gasket change while im fixing the leak under the tstat housing. Is it true that the intakes have 2 gaskets, but as you look at the "V" shaped engine block, there is about a 2" space at the transaxle end that requires just a bead of RTV? Looking at Haynes and asking around it seems that way. That is where my leak is. Is there anything else I can use to seal it a little better??
Thank you for your help. Indeed I do have coolant leaking from just under the tstat housing on transaxle side (drivers). At least I know the problem and can fix it. Thanks again.
 
If you must remove the push rods on your motor to replace the 2 gaskets make sure you keep them in order (they are 2 different lengths) or you will bend the valves and lock up the motor.
 
Make sure there is no oil or coolant on the block or intake and get permatex high temp rtv for the ends.This has been done for many years even on the small and big blocks.Be sure to put a nice bead on the block with no air bubbles.Let it set up as directed most of the time over night.There really is no better way and done rite it wont leak.
 
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