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Old 03-28-2024, 05:17 PM   #11
LS short box
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Join Date: Jun 2015
Location: Carlos MN
Posts: 1,927
Re: LS ECU is best mounted where ?

So as I said above I like to hide wires but on my 98 Wrangler with a 2002 LS6/4L60E swap the ECM has had been in the engine compartment for over 15 years. Zero issues. Rain and or snow and its been bullet proof. Knock on wood but I haven't had a GM ECM fail in my daily drivers or in my hot rod projects.
In the pic you can see the ECM just below the brake booster.
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