411 Swap

[Phone Man]

Hey guys. I am planning on doing the 411 swap in my 99. I have the pin-outs from Lextech. It seems pretty simple. I'm just wondering if anyone has issues specific to our trucks that I should be aware of.

Thanks

 

[gpracer1]

Hey guys. I am planning on doing the 411 swap in my 99. I have the pin-outs from Lextech. It seems pretty simple. I'm just wondering if anyone has issues specific to our trucks that I should be aware of.

Thanks

I just did mine last week.

When you repin the 2 connectors, you wont notice till you go to plug them into the pcm that one is supossed to be upside down. This can cause a problem if you have to twist the connector but you dont have enough slack.

In other words, check the connector orientation as it would go into the pcm as you repin. I think the top one is upside down.

 

[Phone Man]

Thanks for that. Are there any issues with the AC or grounding pins. Most of what I have read elsewhere seem to concern issues with LS based vehicles.

 

[SunlitComet]

Phone, can you forward a copy of the pin outs for some research I am doing please.

 

[96ProCompTahoe]

im interested in the pin outs as well. i've had my eye out for a 411 at the salvage yards but have yet to come across a good one.

 

[gpracer1]

im interested in the pin outs as well. i've had my eye out for a 411 at the salvage yards but have yet to come across a good one.

I got a 0411 PCM from Lextech . He programmed my tire size, disabled rear 02's, Vats, upped the speed limiter, and installed the calibration file for my 99 hoe with my VIN. The pcm, including connectors and shipping was $120.

 

[blue99tahoe24]

what is a 411 swap??

 

[96ProCompTahoe]

computer swap out of a chevy express van (01-02) that alows for better engine management and better tuning IIRC. mine needs tuned horribly, figured i'd throw in the better computer while im at it.

 

[blue99tahoe24]

and i would have to have it re-tuned would i give me better performance and will it connect w/o mods

 

[SunlitComet]

Actually you will have to re-pin your entire pcm harness. The number and type of connectors changes.