Another noob LS swap question

[982DR]

Hey guys, new to the forum here. This is my first post so please bear with me. Alright so I picked up a complete 5.3/4L60e combo out of a '04 Trailblazer. It's DBW and included the TAC module and pedal, all accessories, wiring harness, fuse block, and exhaust. I will be swapping this into a 98 Tahoe. I just finished re-pinning the Tahoe harness for the 0411 computer. What I'm wondering is when I swap the 5.3 in will I be able to just hook up the '04 computer to the existing wiring? Or will I have to swap some pins? I plan on using the original Tahoe harness and just adding in wires where they're needed for sensors. Any help is appreciated guys. I plan on documenting this swap and sharing info on what I had to do to make the swap work. Also I swapped some seats from an '03 truck into my Tahoe and I plan on sharing info on that.

 

[982DR]

Anybody?

 

[88shortbedchevy]

When I did mine, I used the harness that came with the motor. I don't see any reason why you couldn't do it the way your thinking as long as the PIN's on the ECM connector are correct and you have all the necessary sensors.

 

[Biggershaft96]

you would also have to wire up every coil pack, injector, and move alot of sockets. i think the general consensus would be to use the harness from the donor, but ive never done the swap.

 

[982DR]

Thanks for the replies guys, I really appreciate it. I ran into somewhat of a snag. So I pulled this setup out of an 04 Trailblazer and there are a few differences with this motor than the truck motor. Now I jumped on this combo because it was a good deal, but i wouldn't have bought it if I knew what I know now. The dipstick on these engines is incorporated into the oil pan, it doesn't have the machined hole in the block for the dipstick, so the truck pan I need is out of the question. Secondly, it's got the DOD setup and I was reading how to delete it and that's going to take around $350 dollars for the lifter kit to do the delete. Just going to sell this setup and look for a 5.3 out of a truck.

 

[982DR]

Alright so I said screw it I'm going to go with what I have. I ended up drilling the hole for the dipstick tube and scored a truck pan with tray and screen for free from a junkyard. I'll get rid of the DOD by deleting it out of the computer. Also had to remove some broken exhaust bolts from the heads.

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