Conversion Progress Report

[Bear]

Seeing some good progress on this conversion by staying very busy on this 3 day weekend. I started the weekend by deciding to tackle the conversion of the wiring harness. After a phone call to Chevy-Art, he convinced me that the wire complication was pretty much in my head and it's really a lot easier than one would think. I followed the guide on LT1swap.com, using the 04' harness guide. Mine is an 05' Tahoe harness and I found no differences between the two. Very easy task, but requires some attention to detail. I followed Art's advice and laid the harness out on a flat open surface and removed all the tape. Everywhere the harness splits or turns, I put a ziptie there to help maintain the factory shape of the harness. After ziptied, start pulling pins from the PCM following the guide.





These are all the wires and plugs that ended up being removed. I think that I will hold on to these until the motor is in place and wired. This is in case I need to lengthen anything.



Question: I cannot figure out what these 2 plugs are. The wiring removal guide ended up having me remove 3 out of the 4 wires that run to this plug. The only wire left to both plugs are a pink power wire. Does anyone know what these are?





Engine Compartment: My engine bay was in really bad shape as far as filth goes. the frame had no more paint on it and everything was covered in 19 years of dirt, oil, and grease. Since I am putting all this effort into giving my truck a new start in life, might as well throw in the kitchen sink too.

Here is nasty bay before:



And here is what it looks like after 10 hours of scrubbing with a tiny wire brush, some brillo pads, and a bucket of Dawn and Thinner and then painting.



Thanks for looking so far.

[Chevy-Art]

Awesome progress so far. That engine bay looks new. On what connector do the pink wires end up at?

[Bear]

There are two connectors that are the same. Each side of the harness has one. The back end of the plug has been cut because it was wired into something else on the donor vehicle. Here are some better pics of this plug and the cut plug to the vehicle.





This the vehicle side of the plug that was cut and just left hanging on the harness.

[farmtruc]

those look like o2 sensor connectors; if they are the front sensors, you'll need all the wiring; if they are the rear o2 connectors then remove the wiring and connectors completely.

[Bear]

You are absolutely right. They must be the rear one because the front ones are still on my engine unplugged, not cut like these.





Thanks for the quick information on this. One more question on this. Since these are the rear, as you stated, I will not need these at all and you suggest to remove them completely and does this need to be programmed into the PCM when I have that done? I have not taped the harness back up yet for reasons like this so I can alter it in case of need to remove/add something else.

[Chevy-Art]

Yes they will be removed in the PCM by the tuner.

[Chevydillan]

Sub'd for some great work

[kewljay223]

why not just use the earl connectors for an line and be done with it vs trying to rig the old lines? an lines are damn near leak proof. plus they just look awesome with braided stainless. lol

[Mickeymotormount]

Looking good. I guess you're glad to be back on track after the yearlong hiatus.

[Bear]

Looking good. I guess you're glad to be back on track after the yearlong hiatus.

Thanks, I am glad to be back on track. The year did give me time to think about all the things that need to be done vs what I want done. Got to machine a bunch of little parts and fittings that probably saved me $150 or so.