Toronado V6-231 3.8L (1986)
Refer to the THM 440-T4 (M E9) automatic transaxle unit repair table of contents for control valve assembly service information.
Service Notes:
Before installing a service replacement transaxle assembly (SRTA) at high altitude, install the new 3-2 control valve spring.
Refer to pages 3 and 4 of this bulletin for a geographical listing of high altitude areas.
II. HARSH 3-2 SHIFT AT ANY ALTITUDE - 1986 3.0L H SERIES
FIGURE 1
Service Action:
A harsh 3-2 shift in a 1986 3.0L H Series (model 6BHH - refer to Figure 1) may be corrected by installing a service package that contains:
-Package, spacer plate gaskets (2) -Instruction sheet -Spring, 3-2 control valve
Service Parts Information:
Service Package Number 8646982
Service Manual Reference:
Refer to the THM 440-T4 (ME9) automatic transaxle unit repair table of contents for control valve assembly information.
III. HARSH 3-2 SHIFT CONDITION ON 1986 MODELS OTHER THAN 3.0L 6BHH MODEL, H SERIES, OR HIGH ALTITUDE USE
An incorrect load 3-2 control spring may cause a harsh 3-2 shift at 45 mph and below. Contact Oldsmobile TSCS for corrective information.
IV. HARSH 3-2 SHIFT MANEUVER (17 to 20 MPH AT ANY ALTITUDE) - A, C, H, 1986 E SERIES
Service Action:
At start of production (SOP) 1987, an orifice pipe has been added between the 1-2 servo release cover plate and the 3-2 coastdown valve to allow a
smoother second gear apply. The four new parts installed as a set will service certain past model transaxles and may correct a harsh 3-2 shift maneuver at
17 to 20 mph.
If 3-2 shift harshness exists above 20 mph, replacing these parts will not be an effective correction. 3-2 shift harshness above 20 mph is to be corrected
by 3-2 control spring replacement as described in Section I, II, or III of this bulletin.
