Camaro V6-173 2.8L (1983)
Torque Converter: Customer Interest
A/T - Whine Noise In First, Second and Reverse
Number:
83-T-65
Section:
VIIc
Date:
July, 1983
Subject:
WHINE NOISE IN FIRST, SECOND AND REVERSE - 1983 THM 200C AND 200-4R
TO:
ALL CHEVROLET DEALERS
Some 1983 THM 200C and 200-4R transmissions may experience a noise condition that sounds like a high pitched whine. This noise
condition may be coming from the front internal gear assembly, and should not be confused with a torque converter bearing noise or a
pump cavitation noise.
In diagnosing this condition, if the noise is noticeable in drive with the brake applied and the engine at approximately 1,500 RPM, the
cause could be a torque converter bearing noise or an oil pump cavitation noise. If the whine noise is noticeable when driving the car in
first, second and reverse only, the cause could be the front internal gear.
When servicing any 1983 THM 200C or 200-4R transmission for this whine noise condition and the cause has been diagnosed to be the
front internal gear, replace it with P/N 8630909.
