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Found coil pinouts here.
https://ls1tech.com/forums/attachments/conversions-hybrids/105694d1190168315-ls1-swap-faqs-2001-wiring-silverado-1500-5.3l-5of5.pdf

I'm ready to start hacking the...

Ok. The wiring is really, really similar. Should be a piece of cake.

I've made a 'build order' with the wiring changes.
2001 S10 4.3L to 2002 5.3L Silverado wiring changes.
...

So I found this thread.

The guy swapped an 04 LS into his 04 blazer, did a segment swap with the express van, adjusted a parameter for crank resolution, and it worked....

Hmm. I'm going to have to find the last actual file from the PCM. The one I have I was experimenting with and I may have messed it up when doing segment swapping.
Although, that is kind of...

I guess engine and engine diag. I could also do the comparison copy.
Not sure why one is better than the other honestly.

Ya the tune files look pretty darned similar.
12208322 for OS, for both.

So can I just do a segment swap and get it wired up?

So my existing OS isn't going to work without a full reflash?
Its cable operated, and basically the same except for:
Independent coils and 2 more injectors.
1 more knock sensor.
1 more post CAT...

You may be the best person, ever!

When you say 'pick an operating system' what exactly do you mean?

In HPT, I can see the operating system under edit -> calibration details. But it doesn't...

2001 S10 with 4L60E and A/C.
Keeping all emissions stuff.
0411 PCM

Swapping in a 2002 5.3L LM7.

I was looking at bad data at auto zone for sure.
I ended up finding ONE of the PCM original...

I found this so far, which gives really well with the lt1swap and autozone pinouts for the C1 connector.
But alas, nothing for the C2 connector in that thread.
...

Yes, I've examined that page quite a bit. Thank you.
Some of it conflicts with what other people are putting up on swap sites, and some of it conflicts with an autozone lookup of a similar vehicle....

Here's a good example of what I'm confused by.
Existing wiring (this is a 4x4 S10):
16 WHT 776 Transaxle Range Switch P
17 RED 1226 Transmission Fluid Pressure Switch Signal C...

I guess I'm confused as to how the PCM 'knows' what its supposed to be.

If I do a segment swap with a 2001 GMC sierra with a 5.3L stock file (engine and diag segments), and then repin ALL of the...

Hello,

I've been digging all over misc forums and I'm trying to figure out the best path forward.

I'm doing a 2002 5.3L LS swap into a 2001 S10 ZR2 that had a 4.3L V6. I have an 0411 PCM and...