Alli won't downshift [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Alli won't downshift


Kel116
09-09-2007, 08:57 PM
I am finding that after a few hours of pulling my 14k holiday trailer that my tranny doesn't wan't to shift down well.
Its not as if it won't shift down but I seem to have to stand on it forever to shift down.
This doesn't happen at hyway speeds but when you stop or slow down in town it just doesn't want to get down to the lower gears very fast.
I have 40k miles no power adders sythetic ATF and no other problems with my motor or tranny.
Is this seem like normal behavior?

duramax 2001
09-10-2007, 08:54 AM
Last time filter was changed? Fluid level? tire size?

Kel116
09-12-2007, 11:12 PM
Last time filter was changed? Fluid level? tire size?


Stock tires 15k since last filter change, fluid level is fine, trans temp is 80-85 deg C.


Kelly.