0411 swap

[Ksniem]

Did you look here? There is a ton of DYI info and schematics.

Wiring Harness Information

Great site

 

[Ksniem]

Some are available from service manuals for 98-99 gmt400. 411 ecu pinouts are available as well. I am having hard time finding 97 l29 ecu pinouts

Some are available from service manuals for 98-99 gmt400. 411 ecu pinouts are available as well. I am having hard time finding 97 l29 ecu pinouts

I saw LT did that swap on his YouTube page.

 

[yevgenievich]

There is a long one of original threads about the 411 swap. But nothing attached or linked is working there I believe.

98 GMC Twin Turbo with 12200411 PCM--- It's Alive - GM Performance

 

[Scottm]

That is great info on the black box connections df, thanks. I have been waiting for a reply from Lex myself. What info does he have that everyone is looking for? I am guessing a pin by pin walkthrough on the connections to change. Would a service manual for say an 02 L31 van show the equivalent 411 diagrams?

 

[Ksniem]

That is great info on the black box connections df, thanks. I have been waiting for a reply from Lex myself. What info does he have that everyone is looking for? I am guessing a pin by pin walkthrough on the connections to change. Would a service manual for say an 02 L31 van show the equivalent 411 diagrams?

It does, that’s what I’m pinning mine off of. If you have a transfer case I myself am using the info from an 02 Tahoe. The hvac, cruise control, and charging system diagrams as separate schematics help also. The nomenclature has small variances. Once I finish mine I’d be happy to share my info as long as everyone agrees it wouldn’t harm the integrity of what the originators put together.

 

[smokymtn65]

He provides a colored XL spreadsheet for $20

 

[Ksniem]

He provides a colored XL spreadsheet for $20

How did you get in touch, just message him and wait?

 

[smokymtn65]

Yes I just PM 'd him for mine, @Lextech

 

[Ksniem]

Yes I just PM 'd him for mine, @Lextech

Take a few weeks?

 

[Scottm]

My K3500 does have a transfer case, but I don't know if the ecm pays any attention to it.