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My 2009 STS 4.6 v8's gas gauge was showing a qtr tank when

Customer Question
it was actually empty. I...
My 2009 STS 4.6 v8's gas gauge was showing a qtr tank when it was actually empty. I have replaced the fuel pump and now it say 1/2 full all the time. Does the ECM need to be reprogrammed?
Submitted: 2 years ago.Category: Cadillac
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Answered in 12 hours by:
6/16/2015
Cadillac Mechanic: Chris (aka- Moose), Cadillac Technician replied 2 years ago
Chris (aka- Moose)
Chris (aka- Moose), Cadillac Technician
Category: Cadillac
Satisfied Customers: 49,126
Experience: 16 years of experience
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I am sorry for the delay in getting a response to you. Sometimes we get alot of customers and just can not keep up. Sometimes you just have to wait for the correct tech to login.Do you even still need help. Sometimes customers seek help elsewhere or figure it out on their own before we get to each and everyone.I am sure I can help a lot or a little at least something if you give me a chance and work with me. I am going to get an answer to you regardless if you reply or not sooner or later.If your concern is urgent reply and let me know and if you have anything more you think will help me, to help you, let me know. I work on here normally 3pm-3am central. Thanks Chris
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Cadillac Mechanic: Chris (aka- Moose), Cadillac Technician replied 2 years ago
If your pump assembly included the fuel level indicator then the next tests consist of PHM testing the wiring, then monitoring what the computer sees for the fuel level with a scan tool and if good there, then replace the instrument cluster. You want a excellent 5 star answer & I would like to be rated the same for providing it. Consider I don't know your skill level & I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies. Try your best to respond with good detail so I can do the same. I normally log in at 3pm and work late. A rating is required. Your rating me, what I type. I am not an employee of this website, nor have control over the fees or the time it took to get a response. If you rate negative or not at all you still paid, but I get nothing. I want you pleased with me and my efforts, so let me know if your experience here has come up short.Thanks Chris
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Chris (aka- Moose)
Chris (aka- Moose)
Chris (aka- Moose), Cadillac Technician
Category: Cadillac
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