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10-25-2009
i did search a little and read some stickys and i cant find any to the point info on this, i just got a 97 GTP, and i'm aware the PCM is different then other years, but why, and what else is not interchangable. I thought all this body style were generally the same
10-25-2009
They updated PCM's in late 97 I believe. Yours has 4 connectors while the 98-03 have just two.
Another thing is the transmission. Yours is vacuum controlled while 98+ are not.
Throttle body is different as well in 97 and 98. They have a sealed MAF sensor while the 99+ is opened.
Trying to think of other things. I know the DIC is different, like 98+ has trac control and yours doesn't (if I recall)
10-25-2009
the 97 GTP has the 4t65e, so its not vacuum controlled. only 97 SE and GT came with the vacuum one.
10-26-2009
Yep and IIRC (trannyman would have to comfirm this) later year SE/GTs in 97 got the 4T65 instead of the 4T60 (vac controlled) tranny.Originally Posted by Bio248
GTP has always has the 4T65-HD in the 97-03 GPs...
11-13-2009
Also the supercharger has a different vacuum routing, evap system is different, the airbox, abs pump, pcm, washer & coolant bottle locations, HVAC color is green, DIC doesn't have tc as previously stated, a lot of 97 only had a manual lumbar (I got lucky and have power :P ), most 97 have a full antenna instead of the window antenna, the vacuum controlled trans as previously stated, tb...that's all I can think of atm...
11-14-2009
I've got the regular antenna, which is missing btw. and power lumbar also! Go us!
11-14-2009
97 was still vacuum controlled with the 4T65-HD. 98+ had the 4T65-EHD (electric).
11-14-2009
hah! I knew it!
11-14-2009
Now we can all sleep comfortably at night...
11-15-2009
haha def
11-16-2009
Wait, what?
So you are telling me that my 97 GTP has a vacuum controlled tranny!?!?
And here I have been trying to tune it with my PT all this time!
11-16-2009
ALL 97-03 GTP's have an electronically-controlled 4T65E-HD!
To answer the OP: Just about everything is interchangeable. Some parts may require a little bit of modification.
The washer fluid reservoir is in a different location on '97 and '98 than the '99+ making some aftermarket intakes un-usable. This can be fixed by getting and installing a newer reservoir and removing the old one.
The air box in '97 and '98 is also VERY inefficient compared to the newer ones. (This goes back to the coolant reservoir issue, too)
The PCM is physically larger than the '98 and newer ones, but does have the same plug type.
You do not have traction control of any kind (you can consider that a blessing if you are like me and prefer not to have it anyway).
The throttle body for '97 and '98 is a little different and uses a different style MAF. The '99+ ones flow a little better in stock form. (However, a ported '97-'98 TB can outflow even a modified '99+ TB.)
Last edited by DanGTP; 11-16-2009 at 02:54 PM.
11-17-2009
thanks for all the info, i'm glad to finally get one way on the trans issue lol, which i checked for myself on that to make sure, I was nearly positive they were not vacuum. Thanks and this really does help in my junkyard hunting that will be taking place oh so frequently in the next few weeks for this turd
11-18-2009
I don't think lumbar made a difference, my 98 has manual lumbar...
11-18-2009
i've got power on my 97
11-18-2009
i hate you. =[
my cheap ass lumbar knob is one of those ones that is broken when you get the car... it still works, it just hangs out the seat....
11-18-2009
Its very nice, and one of the few things that work properly in my bucket lol
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