Hey I just did a recent engine swap. A 99 grand prix gt engine 3800 into a 2000 grand prix gt 3800. If I put the pcm from the 99 into my 2000 will it work fine ? Or does it need resetting or anything?
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02-09-2013
Hey I just did a recent engine swap. A 99 grand prix gt engine 3800 into a 2000 grand prix gt 3800. If I put the pcm from the 99 into my 2000 will it work fine ? Or does it need resetting or anything?
02-09-2013
99-02 PCM's are all the same...so yes. As long as it is still an L36 PCM it'll be fine.
02-09-2013
I thought it was 98-02 that were all the same. Although i wouldn't want to go with a year below my own unless I was going to program it.Originally Posted by blueguy91
04 Impala SS Indy:
02-09-2013
alright thanks because it runs rough and will shut off after 30 seconds and i was told it could be the pcm acting up. so i can just take the 99 pcm and swap it into mine and have no need to reset? just plug in play and go?
02-10-2013
Try the 99 and see what happens.
02-10-2013
It's likely not the pcm.
02-10-2013
what do you think it is? because i dont have the header crossoverfully on it has a leak cuz i couldnt get it bolted on right.
02-10-2013
you don't have the crossover on at all? No wonder it's running like ****.
02-10-2013
oh its on but not fully its only got three bolts because one of the threads wouldnt come up enough for me to put the 4th bolt on.
02-10-2013
a leaky crossover pipe will make it run bad but it still should run.
02-10-2013
alright. thanks im just trying to figure out how to get that bolt up because there is no nut on it or anything its just a long bolt with a thread. any idea how to get that up through?
02-10-2013
take a pic
02-11-2013
Wait did you replace your plugs after the header install? Because I bet you cracked a plug.
04 Impala SS Indy:
02-12-2013
yep i cracked two plugs while doing it. LOL i replaced them though with ngk's and all cylinders are firing
02-13-2013
Why don't people remove plugs when doing headers?
I've yet to crack a plug with them sitting on the cowl.
02-13-2013
Because the rest of us aren't billboost37
04 Impala SS Indy:
02-13-2013
Any idea how to get the bolt that coms up through that header piece that bolts into the header join pipe? I can't seen to get the pipe on all the way cuz I can't get a nut on it because the bolt won't come up far enough?
02-14-2013
Are you trying to put the front or rear connection point together? Stock or some other exhaust? I'm confused by your description.
Either way, I typically use the bolts for it or that came with it. If you start all the bolts before tightenting anything, it should go very easily.
02-14-2013
the headers crossover pipe is what im talking about
02-14-2013
What brand headers are they?
04 Impala SS Indy:
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