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#1
11-17-2007, 02:20 AM
Hummer Veteran
Join Date: Oct 2007
Posts: 83
Re: DTC U1000
Thanks for the response... Well I'm not subscribed to OnStar... Maybe that is it then.
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#2
11-17-2007, 02:30 AM
Hummer Authority
Join Date: Sep 2003
Location: Canada
Posts: 1,251
Re: DTC U1000
Typically you can ignore any u codes if they are set in history. If it is A current code you need to try and communicate with all modules using a scan tool, if you find a module you cannot communicate with check the data line, power and grounds to that module. If those circuits test ok the module is bad.
#3
11-17-2007, 12:41 PM
Hummer Veteran
Join Date: Oct 2007
Posts: 83
Re: DTC U1000
The only tool I have is the Hypertech programmer. I had a scan tool for my previous car but it is a specialized computer software only for that.
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