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Name that engine harness plug! Version 04 5.3L Envoy LM4

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Old Feb 3, 2012 | 03:09 PM
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windsma's Avatar
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Default Name that engine harness plug! Version 04 5.3L Envoy LM4

Close to the main fuse block plug
1:


and these two near the "trans" portion of the harness
2:


3:


thanks in advance.
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Old Feb 3, 2012 | 03:25 PM
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Upper is for tac module I believe,middle is park/neutral and bottom is trans control main harness.
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Old Feb 3, 2012 | 03:43 PM
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That is all correct! The middle one is the "later" style PNP switch connector found on later transmissions. I believe it integrates the earlier two-connector setup into one connector.
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Old Feb 7, 2012 | 09:27 PM
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Thank you for the point in the right direction.
I found some pinouts for the 2004 Express van ecu.
I should be able to convert it.
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