So I bought 08 duramax LMM with 6 spd allison. Drove it for a month no problem got finally all the parts and fluids to do the fluid swap. After the change transmission was slipping. I checked the fluid before change and was much higher then standard level but I assumed it was because of dented pan on transmission. So I did add extra quart and I was able to drive it now. But once in a while when I accelerate hard it will slip again. Should I add more ATF or is it something else? Truck has 106K miles on it.
Allison 6sp: after fluid change tranny slipping
- Thread starter Death{AW}
- Start date
Hard to tell, pans are only 70-90 bucks, like mentioned need to fix your pan issue and then get a good scanner that reads slip and go from there.
Did the dented pan look like this or did it have additional dents, the way you explain it you might be overfull.?
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https://www.google.com/search?q=Allison+1000+pan&biw=720&bih=1209&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiKj8DzrojQAhXr0FQKHWZyBBUQ_AUIBygC#tbm=isch&q=Allison+1000+stock+pan&imgrc=32JBTQy5cr_hKM%3A
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what do you think "slipping" is? these trans will go into limp before the average joe feels the trans slip
Pretty much what I was referring to.
If you feel it it's usually the transfer case.
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Remember his previous thread, guys?
This was the shape the pan was in:
I guess he decided not to change the pan first? Kinda got the cart before the horse this time, I guess.
That dent's not worth one quart, IMO.
This was the shape the pan was in:
I guess he decided not to change the pan first? Kinda got the cart before the horse this time, I guess.
That dent's not worth one quart, IMO.
Could that dent have pushed the filter up into the valve body and cracked it or damaged something else up inside the valve body.?
