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Old 08-28-2019, 09:26 PM   #1
michael bustamante
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Need some dbw help

So my doner is an 03 Yukon. 2wd
Got the truck running finally,!! But my dbw isint responsive at all. Anyone got a dbw diagram I can follow. I did all the harness myself but I mustve missed missed something
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Old 08-28-2019, 09:42 PM   #2
ls1nova71
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Re: Need some dbw help

There's a pink ignition wire that goes to the TAC module, make sure it has power. It's easy to miss being all by its self.
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Old 08-29-2019, 08:39 PM   #3
michael bustamante
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Re: Need some dbw help

Ok I'll check that now. Thank you!
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Old 08-29-2019, 09:05 PM   #4
Wildkarde
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Re: Need some dbw help

Check lt1swap.com for full schematics on the dbw system.
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Old 08-31-2019, 02:29 PM   #5
michael bustamante
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Re: Need some dbw help

Ok I found it and it sure enough had a bad connection. Soon as I fixed I heard the throttle body engage. Thanks k you!
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