Will Trans Tune help a hesitant transmission? [SOLVED] Asked by Frank O. In Colorado I have a 2002 Chevy Avalanche 5.3 LS60 transmission that is hesitant to shift into 3rd gear. Will Trans Tune free it up ?
It’s worth a try. Trans Tune will help a slipping or rough shifting transmission if the problem is caused by sticky varnish. Add a can of Trans Tune to your transmission fluid and drive at least 30-100 miles. Often petroleum varnish starts to form on valve bodies, shift actuators and solenoids as transmission fluid ages. Trans Tune will clean the varnish and that will often help. You can leave the Trans Tune in until your next transmission fluid change.