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Mickeyfan0805's avatar
Mickeyfan0805
Explorer
Jul 22, 2013

Adding ATF when you don't know what's in there

We had our transmission fluid flushed and replaced last spring and, being the non-mechanical idiot that I am, I didn't ask for detail as to what they filled it with. Since I didn't ask for synthetic,...
Tow Vehicles
mapguy's avatar
mapguy
Explorer
Jul 23, 2013
gmcsmoke wrote:
Why are we talking Allison transmissions when I thought the burb came with a 4l80e?


You are correct. Mistake on my part....for Suburban 8.1 application.

But, in Allison 1000 DexVI is not backwards compatible per Allison and they did publish S/N breaks for both manufacturing plants in production at the time.

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