S15/T15 2WD P/U L4-137 2.2L DSL VIN S (1984)
Output Shaft: All Technical Service Bulletins
A/T - 2-1 Coastdown Clunk
Number:
REISSUE 86-197
Section:
7A
Date:
DEC., 1986
Subject:
2-1 COASTDOWN CLUNK THM 200C TRANSMISSIONS
Model and Year:
1984 CAPRICE, IMPALA, MONTE CARLO, CHEVETTE 1985 CAPRICE, IMPALA, MONTE CARLO, CHEVETTE 1986 CA
TO:
ALL CHEVROLET DEALERS
Bulletin 86-197 is being reissued to correct the Part Number for the pressed on Rear Internal Gear listed on Page
2.
All copies of 86-197 (Section 7A) dated Nov., 1986 should be destroyed.
Some 1984 through 1986 (Julian Date 016) THM 200C transmissions may experience a 2-1 coastdown clunk condition. This condition occurs as the
transmission shifts to first gear just before the vehicle stops.
Transmission Nameplate
To service a 1984 through mid 1986 (prior to Julian Date 016) THM 200C transmission (Figure 1) for this condition the following steps should be
performed.
1.
Check engine idle speed and set to specifications.
2.
Check the rear differential back lash and repair if necessary.
