LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Who here has pulled out an LT1 harness?

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Old 03-22-2005, 05:15 AM
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Who here has pulled out an LT1 harness?

I'm got everything in the engine compartment loose, I'm just wondering what's behind the dash the needs to be disconnected...the ALDL connector? Trying to get a scope of what remains, I'm swapping everything into another car. Thanks in advance.
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Old 03-22-2005, 05:28 AM
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Re: Who here has pulled out an LT1 harness?

Behind the dash should only take you a minute to disconnect. It's only 2 or 3 easy connectors. The grommet will come off the firewall, and the whole thing pulls out.

It's the black circle/uncovered wires:
http://paradox.shacknet.nu/dave88lx/.../blueloom8.jpg
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Old 03-22-2005, 06:37 AM
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Re: Who here has pulled out an LT1 harness?

Good $hit man. I appreciate it.
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Old 03-22-2005, 06:51 AM
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Re: Who here has pulled out an LT1 harness?

yup, thats it.
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Old 03-22-2005, 07:20 AM
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Re: Who here has pulled out an LT1 harness?

One question...what are those connectors for? I know one must go to the ALDL, what about the other one/two?
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Old 03-22-2005, 07:23 AM
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Re: Who here has pulled out an LT1 harness?

which ones u talking about? the big red/grey one go to the computer, as for all the others, just misc. sensors ets on the engine.
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Old 03-22-2005, 07:33 AM
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Re: Who here has pulled out an LT1 harness?

Here is a complete picture of a harness. Note the 4 connectors past the firewall grommet that have to be disconnected.

C220 and C230 are here. One connector (a/c evaporator) is plugged in on the HVAC housing and the other (C210) is tucked under the RH dash.

Uses and pinout of those connnectors are here.
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