Zach1647545520 Posted February 11, 2008 Report Share Posted February 11, 2008 Hey guys just wondering... how can you tell if you have a pre 1999 ls1 pcm??? My car is a 1998 but i have reason to believe it might have a newer pcm (99-02). I read that 1998 gauge clusters do not say oil reset on it and in 1999 they changed it to where it does say it. and mine definately says it and my heads come up as being a 01-02 heads. I'm just tryin to figure out what was done to this car... thank you. Quote Link to comment Share on other sites More sharing options...
hpfiend Posted February 21, 2008 Report Share Posted February 21, 2008 At least on my LT1 car- the computer was on the passenger side right behind the shock tower- two 10mm bolts would pull it out so you could get the numbers off it and run it past a dealer or ls1tech Quote Link to comment Share on other sites More sharing options...
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