1999 2 Door Tahoe LSX Swap

[redaddiction]

did you say you have another 2 door ho

Yes I do, I've had three in the last few months. I purchased one for cheap on craigslist and they guy said it needed just a water pump. Once I fixed the water pump it ended up having a blown head gasket. I was going to fix it up but my wife and I had waited 2 years to go on a honey moon becuase of my deployment so I bought another one for our two week trip to the Moab. When I got back I decided I didn't want a truck with a body lift and sold the second one back to the guy I bought i from and bought the one I'm doing the swap on mostly because I wanted this color.

Here is the one we took to Moab, if you click on the link to my Flickr album there are tons of pictures of our trip to Moab and more of the truck.

5L15I35M13F93Me3N5c6408b06a9959b5165d by MarcusRyan, on Flickr

Untitled by MarcusRyan, on Flickr

Untitled by MarcusRyan, on Flickr

Lightroom Uploads-18.jpg by MarcusRyan, on Flickr


And here is the broken one, I'll end up fixing this one and selling it to fund my swap.

photo-7 by MarcusRyan, on Flickr

[daytripper67mi]

This is from lextech@GMT400 forums(hope it is ok to post here.)

If you have done the 0411 swap then you will already be well on your way to the Gen3 install. You will basically need to add 10 wires from the PCM to the coil pack harnesses. You need to cut off the big CPI connector and wire up your 8 individual injector connectors and lengthen/reroute the CKP connector. The additional correctly colored wires and coil harness connectors can be purchased from EFIConnection.com Your PCM will need to be reflashed with the correct calibration and a couple of additional parameter changes for the Gen3 calibration to operate the fuel and tach gauges properly. I have a wiring file for the changes that need to be performed to an already 0411 equipped truck. I don't understand why anybody would want to reharness their truck when this repin with a few additions is so easy and inexpensive.

Jeff


Original thread@GMT400...<a href="http://www....thread.php</a>http://?9644-12200411-PCM-swap-for-1...-GMT400-trucks

[Botlfed]

send me a private message of what you may ask for that tahoe as is.

[redaddiction]

Daytrip thanks for the heads up on the steps to do this swap. I've considered finding another harness for my year Tahoe and start working on it so my swap can be a weekend event.

[daytripper67mi]

Daytrip thanks for the heads up on the steps to do this swap. I've considered finding another harness for my year Tahoe and start working on it so my swap can be a weekend event.

I believe if you ask on GMT400 lextech will share his info freely.Good idea on an extra harness.
I am waiting for an excuse to swap an LS into one of my OBS trucks.I have been gathering info,but just bought a house so it may be a while before I can spend on my toys.

[pl4yboy]

Lextech is a member here as well.

[redaddiction]

Lextech is a member here as well.

I sent him a pm, hopefully he can come give us anymore info he has.

[Lextech]

I sent him a pm, hopefully he can come give us anymore info he has.

PM me your E-Mail address and I will send you the Wiring File. You can use your stock 99 harness with a bit of rework and it will cost you next to nothing. Plus, You get to say you did it yourself.

Jeff

[redaddiction]

PM me your E-Mail address and I will send you the Wiring File. You can use your stock 99 harness with a bit of rework and it will cost you next to nothing. Plus, You get to say you did it yourself.

Jeff

PM sent thanks a lot.

[redaddiction]

Ok little update without pictures, later today I'm going to pick up a cherry picker and get my motor on a stand. Then the 5.3 will be cleaned and prepped for install. I also have a 0411 pcm from lextech on the way, he is a really stand up guy if you have any questions about the 0411 swap he can give you the wiring diagrams.

So here is my game plan

1. Convert Truck to 0411 PCM for now
2. Delete all of the emissions on my truck that I will not be using
3. Finish Outfitting my 5.3 and collecting parts for the swap, including the flywheel, r4 compressor bracket
4. Order the connectors to convert my harness to be used with coil/ls1 fuel injectors

No worries I'll be getting some pictures tonight when I clean/paint my motor, still waiting on some guy to buy my transmission and when he does I'll be ordering the motor mounts, and a/c bracket from dirty dingo.