Intermittent Buzzing/Grunt During Partial Load 2-3 Upshift
CAUSE:
Resonance from hydraulic and frictional vibrations during K1 application.
REMEDY:
No known remedy.
DO NOT REPLACE ANY PARTS!
NOTE: This noise during shifting is a characteristic of transmission series 722.3. 722.4, 722.5. This noise has no adverse effect on transmission service life.
CAUTION: REPLACING THE AUTOMATIC TRANSMISSION WILL NOT PROVIDE A SOLUTION.