2001 Chevy Suburban 230k 4l60E Transmission shifting issues
I have a 2002 chevy Suburban 230k miles 4l60E
transmission.... having some shifting issues.... once
it gets up to 30 mph it’s like it does not shift... Rpms
rev up like it’s in neutral but does not shifts and
stays at 30-40mph at most.... transmission filter...
fluid has been changed and replaced... all shift
solenoids have been replaced.... Pressure switch
has been replaced.... and valve body has been
cleaned..... still doing the same thing..... it started
with this issue after we had our last snow and we
used the 4WD not much longer afterwards we
started having issues...... any ideas what this could
be?