Section A THM 125-C Diagnosed Conditions or Symptom Descriptions
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current orderGENERAL DIAGNOSIS
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS or SYMPTOM
LEAKS Diagnosing All models BUICK 83-77 Diagnosis procedure given for on
transmission CAD T83-51 car leak detection
oil leaks CAN 7120-83
CHEV 83-I-50
CORP 837910
HM 82-34
OLDS 83-T-5
PONT * 83-I-53
Correction for 1982 BUICK 2-I-228 Service procedure given for on car
oil foaming CAN 7-197 service when correcting this condition.
CHEV 2-T-131
CORP 827021
HM 82-38
OLDS 33-4
PONT* 82-T-93
Oil exhausting 1982-1983 BUICK 83-46 Procedure given for replacement of the
from vent CAD T83-62 valve body cover attaching bolts.
CAN 7105
CHEV 85-T-13
CORP 837002
HM 82-48
OLDS 33-4
PONT* 83-T-2A
Front Converter 1982 BUICK 83-66 Service procedure for correcting an oil
Seal Oil Leak CAD T83-71 pressure lock-up which forces the
CAN 7111 converter seal out of its bore.
CHEV 83-T-22
CORP 837005
HM 82-49
OLDS 33-6
PONT * 83-T-12
THM 125-C DIAGNOSED CONDITIONS OR SYMPTOM DESCRIPTIONS (Cont'd)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL DIAGNOSIS
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS or SYMPTOM
NOISE Noise in Park 1982 & 1983 BUICK 83-118 Noise condition may be caused by
& Neutral All Models CAD T83-73 wear or damage on drive and/or
CAN 7-124 driven sprocket roller cage bearings
CHEV 83-T-35 or driven sprocket thrust bearing.
CORP 837006 Illustration provided.
HM 83-12
OLDS 33-8
PONT * 83-T-28
Bearing noise 1982 & 1983 BUICK 83-118A Noise condition caused by a rough
in Park All Models CAD T83-73A surface on the driven sprocket, where
or Neutral CAN 7147-83 the driven sprocket roller cage bearing
CHEV 83-T-85 locates. Service procedure given.
CORP 837006
HM 83-12A
OLDS 33-8
PONT* 83-T-28
THM 125-C DIAGNOSED CONDITIONS OR SYMPTOM DESCRIPTIONS (Cont'd)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL DIAGNOSIS
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS or SYMPTOM
PERFORMANCE Diagnosing no 1981 BUICK 82-I-75 Condition could be caused by worn or
Drive or CAD T82-30 missing pressure regulator valve
Harsh Shifts CAN 7123 retaining pin. Service procedure given.
CHEV 82-T-24
CORP 827007
HM 81-70
OLDS 32-7
PONT* 82-T-22
TCC "Shudder" 1982 HM 82-25 These inspection points are given to
diagnosis and All models check for when diagnosing this
no TCC release condition. Illustration.
Burnt Band All models HM 82-29 Service procedure and package number
causing is given for new accumulator check
excessive valve and conical spring.
friction
Intermittent 1983 BUICK 83-44 Procedure given for the removal of
Second Gear CB, HY CAD T83-83 the primary spring from the
Starts models CAN 7107 governor assembly.
CHEV 83-T-16
HM 82-55
OLDS 33-5
PONT* 83-T-9
Torque 1982-1983 BUICK 83126 Supplements HMD 82-25 with additional
Converter All models CAD T3102 information on possible causes of
Shudder CAN 7-145 torque converter shudder.
CHEV 83-T-53 Illustrations provided.
CORP 837007
HM 83-14
OLDS 83-T-16
PONT* 83-T-34
THM 125-C DIAGNOSED CONDITIONS OR SYMPTOM DESCRIPTIONS (Cont'd)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL DIAGNOSIS
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS or SYMPTOM
PERFORMANCE No Reverse or 1980-1983 BUICK 83-186 The low/reverse piston assembly is
Neutral to All models CAN 7-199 being produced with a 3rd design
Reverse CHEV 83-T-16 lip seal retainer and oil displacement
Delayed CORP 837012 insert. Illustration given.
Engagement HM 83-34
OLDS 83-T-20
PONT* 83-T-56
Loss of power 1982-1984 BUICK 84-7-2 New brazing process for converter
in Drive & OP model CAN 7120 blades prevents movement of blades
Reverse CHEV 84-I-93 and reduction of torque multiplication.
CORP 847901
HM 83-80
OLDS 34-8
PONT* 4-7-23
Rough Neutral 1982-1984 BUICK 471252A New forward clutch wave plate has
to Drive CAD T84-56A gone into production to eliminate this
Engagement CAN 7118 condition. Part number and serial
CHEV 84-94 numbers listed.
CORP 847002
HM 83-101B
OLDS 35-2
PONT* 84-7-9
Torque 1982-1983 BUICK 4-71257 Supercedes HM 82-25, 83-13, 83-14.
Converter All models CAD T85-1 Provides a summary of possible causes
Shudder CAN 7-147 of apply shudder and crowd shudder.
CHEV 84-171 Illustrations provided.
CORP 847006
HM 84-01
OLDS 84-T-16
PONT * 4-7-33