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PCM location

S

sasquatch

New member
I need to know a couple things about the 2000 GP se 3.1 I have a reman. computer I need to install but, I can't seem to find the D@mn thing. anybody know where it is located on the 2000? and do I have to have the dealer flash it on an '00 ? also....... can I remove my old computer and reinstall it w/o a reprogram, or am I screwed the second I disconnect? thanks!
 


should be plug and play.. sometime u need to do a security re-learn. its under ur airbox under hood.
 
great! out it comes monday. anybody know how to reprogram my remotes? I have done it once but, it was over two years ago. and will my stereo work or have I got to have the security code???
 


well, because of a transient shifting problem. all it could be is the computer. the trans has been freshly rebuilt and inspected yearly. it is also under lifetime warranty so, I have had it repeatedly checked. what happens is only in the summer when it's hot outside. the car will be driving fine then, all of the sudden it will start short shifting and shifting really hard. so, you turn it off for about 30 sec. and once you start it up again then it drives fine. classic signs of a computer error in my book. now dont get me wrong there could be a wiring prob. too but, if you have a micro crack in your computer motherboard it would do just exactly that kind of thing. doesn't really matter anyway though, I already have the new computer so, might as well try it.
 


^what they said.... its your transmission pressure control solenoid. Same exact thing would happen to mine. It never did set off a code, just I could tell something was wrong (hard shifts).
Thankfully it was still under warranty (iirc $800, but at the stealership)
 
i could probably give you guys a breakdown of what exactly they replaced. I believe it is listed on the rebuild receipt. but it has to be doing it when they inspect it for them to do anything about it!
 
Yes it does happen at random. When the computer senses that the trans is shifting too slow it sets to max line pressure to protect the trans. Did you read the link?
 
yes I DID read the link Supersport. you are misunderstanding me. what I asked is why would it only do it after the rebuild and never before? that's what I meant. I drove the car for well over a year before the trans. needed to be rebuilt and it had never happened to that point. thats what I'm trying to say. it just makes me wonder what they actually did when they rebuilt it.
 


before we start accusing p1811... go get it scanned by a real scanner.. not an autozone scanner. see what codes are stored in the pcm.
 
guess what. it was 80 degrees here today, and sure enough, it did it again driving home. temp on the gauge was around 200, and it seems to do it every time it's hot outside and the car is hot as well. but not when the car is hot and it is cold outside. I think I should just try the new computer as long as I already have it. and see what happens. the worst case scenario I can just sell the new one I bought if there is nothing wrong with the old one.
I am looking into actually buying scanning software for my laptop that will give me a live feed and I can actually see what is going on as it happens not just when I get a freeze frame. this problem has NOT thrown a code that any scanner including the one at the transmission shop has been able to find. this was another reason I was leaning toward just replacing the PCM and seeing if it cured it as this problem seems very much heat related and when the board heats up that could definitely cause a short and freak out the computer AND I know for a fact that this car has been in a serious collision on the drivers side, and that the trans. was replaced because of it, along with the drivers fender and headlight. now if the computer sits just below the airbox isn't it very possible that it was also damaged in the collision?
 
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