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98 pcm/harness on an 01 ls1?

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Old Sep 21, 2010 | 11:58 AM
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Default 98 pcm/harness on an 01 ls1?
like the title says, will a 98 pcm and harness work on an 01 ls1?
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Old Sep 21, 2010 | 12:25 PM
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No, re-pin it for the 1999-02.
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Old Sep 21, 2010 | 12:53 PM
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well i just got off the phone with speartech,

they said if i use a 98 pcm with a 98 harness, i should be okay.

just wanted to see what everyone thought
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Old Sep 21, 2010 | 09:24 PM
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It will work, just be aware the 97-98 PCM is the ugly duckling of the LSx PCMs

Id repin it for the 99-02 if I were you
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Old Sep 21, 2010 | 11:28 PM
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I'm using 98 PCM and harness with a complete zo6 top end and cam. Been running strong for 2yrs. If it's what you have on hand to work with there's no need to worry.
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Old Sep 22, 2010 | 05:13 AM
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alright cool, thanks.

ron is sendin me up the 98 pcm, so I guess when i see it i'll make my decision. if it works though, than i'm prob gunna stay with it.

i thought the 98 pcm had different connectors though, or is it just different pin designations?
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Old Sep 22, 2010 | 05:13 AM
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It can work just fine.
Remember to have the computer reprogrammed for the different injector size though. '01's are 28lb, 98 was 24lb.
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Old Sep 22, 2010 | 05:18 AM
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oh okay.

on a side note... it has the ls6 manifold on it, does that mean it has to use ls6 injectors or are they still the ls1? too early in the am to look, but since u mentioned it i thought id ask
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Old Sep 22, 2010 | 11:12 AM
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If its an ls6 mani it should have the 28lb inj unless someone switched them out.
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Old Sep 22, 2010 | 11:20 AM
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Originally Posted by Jones'n
It can work just fine.
Remember to have the computer reprogrammed for the different injector size though. '01's are 28lb, 98 was 24lb.
98 was also 28lb. 99-00 was 26lb and then 01-02 went back to 28lb. Im pretty sure thats how it went.
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Old Sep 22, 2010 | 11:58 AM
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anyway to tell? physical differences or no.
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Old Sep 22, 2010 | 01:14 PM
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Originally Posted by Lambert695
98 was also 28lb. 99-00 was 26lb and then 01-02 went back to 28lb. Im pretty sure thats how it went.
I wasn't 100% sure, but I know they change.
If you are using HP tuners, could just download a stock 98 file from their website and compare it to an 01 file to make the changes.
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Old Sep 23, 2010 | 11:03 AM
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Look up the part number
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Old Sep 23, 2010 | 11:13 AM
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not worried about buyin new, just wanted to know what ones i currently have so my pcm can be programmed correctly.
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