Quote:
Originally Posted by roosterk0031
The Auto truck won't DFCO, unless you put it indo D maybe 2 to get engine braking, GM unlocks the torque convertor with their autos when in OD so they coast better so you'll never get engine braking or DFCO in OD.
I don't know what the towing button would do, maybe it would keep it locked thinking you would want engine braking then.
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they'll still kick into DFCO in 4th gear if at a high enough speed. it doesn't happen as quickly as in 2nd/3rd gear, but it will happen if certain conditions are met.
tow mode modifies shift points and TCC lock/unlock behavior.