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Tow/Haul flashing

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Old Mar 19, 2010 | 07:02 PM
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Tow/Haul flashing

Went to backup today with my gn trailer and didn't want to move and the tow/haul started flashing. Finally got backed up , parked, shut truck off and started back up seemed ok, not flashing. Whats wrong?
 
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Old Mar 19, 2010 | 08:43 PM
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Something is going on with the tranny, Get it checked, codes, line pressure etc and go from there, also , when was the last time you had it flushed and a new filter installed?
 
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Old Mar 19, 2010 | 10:46 PM
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Tow/haul flashing is like the cel on the dash for your tranny. It is telling you something is not right with it. Mine did it when the trany temp sensor went out.
 
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Old Mar 19, 2010 | 11:48 PM
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My truck did that when the alternator was failing.
 
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Old Mar 20, 2010 | 07:08 AM
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The only way to know is to have the codes read by someone that has a scan tool that is CAN compliant.
 
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Old Mar 20, 2010 | 07:24 AM
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I just drained the pan and refilled and changed external filter. I can get it scanned in a day or two. Will let you know.
 
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Old Mar 20, 2010 | 10:47 AM
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The only code coming up was the output shaft speed senser
 
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Old Mar 20, 2010 | 10:52 AM
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That is on the top rear passengers side of the tranny, IIRC 10mm bolt hold down.
 
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Old Mar 20, 2010 | 11:59 AM
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This sensor would'nt stop it from moving though. Where would you get a rebuild kit for this tranny?
 
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Old Mar 20, 2010 | 02:52 PM
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The code puts the tranny in limp mode.
 
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Old Mar 20, 2010 | 03:22 PM
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So your saying that could be the problem? The sensor.
 
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Old Mar 20, 2010 | 09:17 PM
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A sensor problem can't keep the truck from moving. It will affect the shifting, but it won't stop it.
 
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Old Mar 21, 2010 | 08:04 AM
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Can you just replace the parts that are slipping? clutches or bands.
 
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Old Mar 21, 2010 | 10:21 AM
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You can just replace the worn out clutches, but for just a few dollars more you can rebuild the whole thing. You won't save much money at all, and you'll probably have to do the job again soon if you only replace some parts.
 
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Old Mar 21, 2010 | 04:27 PM
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Whats a good price and place for rebuild?
 
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