Ciera V6-231 3.8L (1986)
Torque Converter Clutch: All Technical Service Bulletins
A/T - Summary of Shudder Diagnosis
SUBJECT
1984 THROUGH 1986 THM 440-T4 SUMMARY OF
NUMBER: 86-T-51A
SHUDDER DIAGNOSIS
DATE:
December 22, 1986
MODELS/YEARS
ALL MODELS WITH 440-T4 TRANSAXLE
SECTION:
7A
This bulletin replaces Dealer Technical Bulletin 86-T-51. It contains revised "Year Digit and Model" information and torque converter part numbers.
A vehicle equipped with a 1984 through 1986 THM 440-T4 transaxle may experience a shudder condition which may be described as similar to driving
over rough pavement. This condition may be the result of various engine and/or transaxle-related causes.
Before diagnosing for a transaxle-related shudder condition, make sure the condition is not engine-related.
FIGURE 2
Refer to the chart (Figure 2) for diagnosis information and potential causes. When performing any service procedure, refer to the appropriate service
manual..
