Recently the trans in my 02 4.4 has been not shifting up to 3rd. Didn’t do it all the time only occasionally.
Today it pinged and I got ‘trans failsafe’ readout on the dash. No other lights ie trifecta but it’s stuck in 3rd gear.
Scanned it with my C110 and it says-
‘DD CAN timeout ASC/DSC’ and
‘DC CAN timeout, electronic transmission management (EGS/AGS)’.
Can anyone shed any light on this?