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Old Apr 15, 2026 | 10:42 AM
  #21  
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How do you know it stays in 8cyl. all the time if the gauges don't show it? I had mine tuned out and I still can see which mode it is in. Switch to econ mode and you will see it.
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Old Apr 15, 2026 | 02:00 PM
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Originally Posted by Vader_C5
Call your local dealer service department and ask for a VIS report. If the triple flush is NOT listed on the VIS, then I would strongly advise you to get it done. I am getting my 2016 Triple Flush done in a couple weeks with 43k miles.
Originally Posted by drive it
If it stays in 8 cyl. mode without the range it may well have had a tune for it. If in doubt-triple flush. I did it my self and found 3 flushes I only used 18 qts. so did a fourth to use the 24 qts. I was getting that slight shudder and now it's gone.
Originally Posted by duckvett
There is NO fuse that controls the AFM. Only two ways that I know of to control AFM - Range or a tune.
Good info here. If unsure about the triple flush, have it done.
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Old Apr 15, 2026 | 02:00 PM
  #23  
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Originally Posted by etaylor14
How do you know it stays in 8cyl. all the time if the gauges don't show it? I had mine tuned out and I still can see which mode it is in. Switch to econ mode and you will see it.
If you switch to the right screen, the gauge cluster will display it.
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Old Apr 15, 2026 | 03:09 PM
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Originally Posted by Kingman99
the range is labeled GTMOTOR IT IS plugged into Top Down Tech window valet l had this in my C5 so it works

l will try all the different combos
Sounds like a chinese copy of a Range device. How can it be plugged into a window valet but not the OBD port? Even then, it won't remove the V8 indicator from the dash.
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Old Apr 15, 2026 | 03:16 PM
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Originally Posted by F4Gary
Sounds like a chinese copy of a Range device. How can it be plugged into a window valet but not the OBD port? Even then, it won't remove the V8 indicator from the dash.
Piggy back or splitter for the OBD port maybe?
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Old Apr 15, 2026 | 03:41 PM
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Originally Posted by aklim
Piggy back or splitter for the OBD port maybe?
Who knows at this point.
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Old Apr 15, 2026 | 05:35 PM
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Piggy back seems about right.,k
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Old Apr 16, 2026 | 11:32 AM
  #28  
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Kingman99 - you need to show us photos of what you are talking about.
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Old Apr 17, 2026 | 08:21 PM
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Originally Posted by duckvett
Kingman99 - you need to show us photos of what you are talking about.
where can l find out how to load? I forgot the last time I downloaded a pic

thanks
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