05-16-2008, 09:01 PM
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eBay Motors
#17 (permalink)
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| Super Man Moderator Points: 10,595, Level: 44 |
Join Date: Oct 2006 Location: Irwin PA
Posts: 3,136
| Hmm thats weird. Did you buy the truck new or used?
The allison has a problem that the trans will slip and go into limp mode if you add a programmer. However, the transmissions are so sensitive thst improper maintenence could cause damage.
I know that the older 5 speeds in GM diesels called for synthetic. If you changed to a different fluid in them you could get problems as well.
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