Just bought GTP and wondering

[ADrugDealer]

I just bought a 2004 GTP with 75k miles on it. What should I do right away, or check right away to it to make sure it lasts its longest?

 

[Fivefingerdeathpunch]

Plugs, wires (stock replacements)

Oil change.

transmission pan drop and filter change, new fluid.

PCV valve.

Air filter

Take the TB off and clean it along with the MAF sensor, use the right cleaners.

CHeck over the condition of suspension parts and driveline parts. Wheel bearings, ti rods, brakes etc etc.

 

[buickman104]

depending on mileage check LIM gaskets.

 

[asite57]

do a fuel filter also

 

[TexasTanker19kilo20]

Change the SC oil also.

 

[bps02gtp]

i'm pretty sure that the 04 come stock with the bad LIM Gaskets. they didnt start the 2nd design till 05. someone please correct me if i'm wrong. if it is the 1st design, you DEF need to check the gaskets. here something that might help

http://www.grandprixforums.net/how-tell-if-you-have-good-lower-intake-manifold-gaskets-62678.html