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Premium Member
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554 Posts
Discussion Starter #1
Is it a problem running my truck with the following codes:
401, 404, 406, 1404.

Background is that I had a blocker/FS installed and my dealer replaced the entire wiring harness, so of course they found my FS that was installed. They were cool with it but said if GMC asks for the harness back then I could have some problems. So, I have the blocker still installed but not sure I want to cut a wire on the new harness just in cass I have problems. Only other option is to take out the blocker. Thanks in advance.
 

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412 Posts
Another option would be to get a Predator V2.02 and disable the EGR diagnostic function, or better yet, get the EFI LIVE software to disable it....:D
 

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Premium Member
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554 Posts
Discussion Starter #3
Another option would be to get a Predator V2.02 and disable the EGR diagnostic function, or better yet, get the EFI LIVE software to disable it....:D
I plan on getting EFI LIVE within the next week or two but need to figure out something in the mean time. Thanks.
 

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Discussion Starter #5
Thanks. Yeah, I was just making sure it was okay to run with those codes until I get a fix for them.
 
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