4.3L to 5.3L silverado engine swap help
#12
How to get A/C to work
I have a 5.3 LS lm7 that I pulled out of a 01 GMC Yukon complete motor and 4l60 drive-by-wire throttle I want to drop it in my 05 Silverado single cab short bed it currently has a 4.3 V6 I have all the necessary stuff to drop in the motor I had the harness rework to standalone and the computer reflash my question is the guy that did the standalone he removed all the AC wiring and abs so once I do the swap how would I get my AC and abs to work
#13
100% Redneck
I'd look for a different harness from a salvage yard. Look for a V8 harness from an 03+ Tahoe, Silverado, Sierra, Yukon or Escalade that has the Green/Blue PCM connectors. The PCM must also be from an 03+. The 01 Yukon's computer and harness that came with the donor engine will not work with your 05 Silverado.
#14
04 5.3 going in a 06 4.3
I have an 06 4.3 Silverado that’s dbc and I’m swapping it with an 04 5.3. I have the harness, ecu, and tac module etc... the 5.3 I have has fuel and return, but my 06 is return-less. Could I put an 05-06 intake on the 5.3 to convert or would I run in to other issues?
from what I understand, it should be a direct drop in.
from what I understand, it should be a direct drop in.
Last edited by Dookiedoolittle; 04-08-2021 at 10:54 PM.
#15
Dave
Dave
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