Service Bulletin Number: 090103
NHTSA Item Number: 10005073
AUTOMATIC TRANSMISSION (A/T) WHINE? MAKE SURE IT'S THE A/T BEFORE REPLACING IT.
NOTE: This article applies to ’98–04 Accords, ’97–03 CR-Vs, ’03 Elements, ’99–04 Odysseys, and ’03–04 Pilots.
Got a customer complaining of a whining A/T? Before you go off and order a reman unit, make sure the culprit isn’t tire noise (beware of aftermarket wheels and tires) or wind noise. Both of these noises can easily be mistaken for A/T gear whine. For an accurate diagnosis, you need to test-drive both your customer’s vehicle and a known-good vehicle long enough to get the A/T fully warmed up. Some noises can take up to 20 miles of highway-speed driving to duplicate the complaint.
Keep in mind, though, that unless the noise is really worse than other vehicles, installing a reman A/T may not offer sufficient improvement to satisfy your customer.