Yes, when changing the coupler on a 2001 Pontiac Grand Prix GTP, the nose cone typically requires a gasket to ensure a proper seal and prevent leaks. It's important to use a high-quality gasket designed for that specific application to maintain the integrity of the assembly. Always consult a repair manual for specific instructions and recommendations.
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No risk just make sure head is not warped before replacing gasket Is this a quad 4 motor????????????????????
it will cost you 200 dollar if do it yourself
Connect the 2 hoses together that go into the firewall with some kind of hose coupler clamps.
yes
15.00. for gasket and thermostat
Any auto parts store can get you one.
Cylinder head gasket torque specs on 2003 Pontiac Grand Prix 3.1 L V-6
Can be many things, but considering you just changed the intake gasket, I would suspect you did it incorrectly or have knocked a vacuum hose loose somewhere. You have a vacuum leak somewhere.
the coupler is probably worn out. replace it and the oil and it should be fine. if not then the bearing are bad but most of the time its just the coupler. http://www.zzperformance.com/grand_prix/products1.php?id=155&catid=106
blown head gasket