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gto 2004 fuel relay looses signal then engine shuts down

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gto 2004 fuel relay looses signal then engine shuts down

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Old 03-09-2018, 03:12 AM
  #21  
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Originally Posted by hawkls7 View Post
thanks , last question in doing this would I loose my custom tune in pcm?
Yes you will loose the tune... I believe that I told you that HPTuners is needed to copy the tune in an earlier post.
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Old 05-12-2018, 08:49 PM
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Originally Posted by Jontall View Post
Yes you will loose the tune... I believe that I told you that HPTuners is needed to copy the tune in an earlier post.
I have purchased the ac delco tis to web subscription $40 for 1 vehicle purchased the mongoose pro gm2 dongle and then have tried the SPS programming ECM controller followed all the prompts
and have received an SPS E 2701 No authorization to program the selected software. IT is not allowing me to proceed further , can any one help ?
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Old 05-13-2018, 12:57 AM
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You need a Tech 2 scanner or Tech2Win here: https://www.acdelcotds.com/acdelco/action/subscribehome
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Old 05-13-2018, 01:22 AM
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I hope this helps:
Attached Files
File Type: pdf
GM-SPSManual.pdf (611.6 KB, 6 views)
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Old 05-13-2018, 03:19 AM
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Originally Posted by Jontall View Post
I hope this helps:
Thanks for your help Jontall . I am not using the tech 2 , I'm using a Drew tech GM mongoose pro 2 cable to vehicle input and connected to pc . I am in the ac delco SPS programming section communicating on line SPS pulls Vin , I change vin on second hand unit to my original vin
follow all the requests then comes to auto or manual , press auto then continue and wait and come up on screen with E2701 No authorization to program the selected software .
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Old 05-13-2018, 04:19 AM
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Are you running all three pumps on one relay? How many amps is the relay rated for? How do you have it wired?
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Old 05-13-2018, 07:01 AM
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Originally Posted by Fuhnortoner View Post
Are you running all three pumps on one relay? How many amps is the relay rated for? How do you have it wired?
I am running two pumps off one relay 30-40 amps and the third pump has 1 relay 30-40 amps I have had it wired this way for about 4 years
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Old 05-13-2018, 07:30 AM
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Any MIL? Sounds to me like a short or overload in the pcm fuel pump trigger wire, or a bad ground.
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