Question about 2002 Pontiac Grand Prix

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Rebuild All or just Fix Heads

I need an opinoin. I recently blew a head gasket on my 2002 Pontiac Grand Prix with 140,000 miles on it. Right until I then the car was giving me excellent peformance. I'm not sure if my lower block needs a re-build, but I think now might be a smart time to do it.

My question is:
Since I have to pull off the heads to fix my car anyway, is it a WISE thing to pull the rest of the engine out and re-build it, or a waste of money? It cost $1200 to do a complete rebuild, and about $600 just to fix the heads. This difference in cost means a lot, but I plan to keep this car.

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It is best to rebuild the whole thing, just the heads will put more pressure on the bottom end ,with that many miles and start leaks and could lead to bearings going out, it did happen to me in the past and a hard way to learn

Posted on Jan 04, 2009

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Problem with 2004 Pontiac Grand Prix 2004 pontiac gp, new heads, gaskets, coolant, oil, thermostat. still spikes heat. what next?


Replace your coolant temperature switch,it's screwed into block by oil filter.Here's a picture of what it look's like.Your water pump working properly.Are your spark plugs burning clean,not oily from bad piston rings?

Jan 16, 2013 | 2004 Pontiac Grand Prix

1 Answer

How to tell if i have a blown head gasket on my 2004 pontiac grand prix


The only way to know for sure is to pull the heads and check the head gaskets.
Oil in the cooling system or coolant in the crankcase is usually a sign of a gasket failure.

Aug 03, 2012 | 2004 Pontiac Grand Prix

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Where the head sits on the block is loose how do o fix this?


Replace your head gasket. you most likely blew a head gasket. Look up your head torque spects online.

Jan 10, 2012 | 1998 Pontiac Grand Prix

1 Answer

How to take heads off


Go to the Auto Zone web site, look up your year, make and model. Look in the repair info and you will find step by step instructions.

Nov 16, 2011 | 2002 Pontiac Grand Prix

1 Answer

Leaking water from head gasket.


You need to change head gaskets, have your heads checked to see if they are cracked.

Jun 08, 2011 | 2005 Pontiac Grand Prix

2 Answers

(1999 pontiac grand prix 3100 SE v6) where is my head gasket located and how do I replace it? Diagrams are welcome!


CYLINDER HEAD GASKET LOCATED BETWEEN CYLINDER HEAD AND CYLINDER BLOCK.YOU CAN GO TO ANY AUTO PARTS STORE BUY A CHILTON OR HAYNES REPAIR MANUAL.IT WILL HAVE PHOTOS WITH HEAD GASKET.

May 25, 2011 | 1999 Pontiac Grand Prix

1 Answer

We have an 2002 Aztec 3.4 litres engine, never a problem with it since we purchased it new in late 2001 until recently while pulling a trailer it blew the head gasket.


very common, we see head gaskets and cracked cylinder heads all the time, they do offer a heavy duty radiator for this van it would be a good idea if you are going to tow with this van.

Nov 18, 2010 | 2000 Pontiac Montana

1 Answer

Grand prix has a 3.1 6cyl. and 166000 mile, it blow white smoke


Sorry to inform you of the bad news but the white smoke is engine coolant burning off and the rough running condition is also associated with coolant leaking into the combustion chambers.This will be a head gasket repair, basically a head job where you will need to machine the heads down and install new gaskets from the heads up.Get back to me if you have any more questions, thanks and I hope I could help!!!

Apr 11, 2010 | 1999 Pontiac Grand Prix

1 Answer

I have a pontiac and i keep blowing head gasket on number one cylinder. I have installed new heads and gasket lasted about five years. I was wondering what the correct head bolt torque is for a 1995...


cylinder head bolts, step one;33 ft. lbs, second step rotate an additional 90-degrees (1/4 turn). do not put any oil or sealant on gasket. the gasket should seal itself if torqued properly.

Feb 27, 2010 | 1995 Pontiac Grand Prix

1 Answer

Overheating, no coolant loss


I have a 1996 Pontiac Firebird with the 3.8 L V6, and have had problems until I replaced the DexCool (it's never ran so good!) However relating to your problem, there was a class action lawsuit regaurding the 1996 GMC/BUICK/PONTIAC 3.1 L engine, due to DexCool destroying the engine/heads/etc. Follow the link - I do not know all of the details, but it may be worth checking out. 1996 was the first year that DexCool was used at GM.
Hope it helps.
http://www.dexcoolsettlement.com/

Aug 11, 2008 | 1999 Pontiac Grand Prix

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