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Do the 5.3's have intergrated tcms/pcm's?...........
Questioning possible turbo 5.3 build......

Need to know if the tcm/pcm are regulated together or seperately....

On ls1tech.com.......the guys that use the truck 5.3's say it should make for an easier swap due to the 5.3 came in the trailvoys,,,,,,

Its approz 7 wires to allow an lsx engine to run correctly.....

I need to know if it would be easier to splice into my i6 harness or buya a complete harness from 5.3 donor and swap????

Or take 5.3 harness and splice into my i6 harness???? :tiphat
 

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2005 gmc envoy_denali
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Gen IV V8's 2005 model year and newer have a separate ECU and TCU. Earlier model years had integrated (one) unit.
 
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