Cutlass V6-260 4.3L DSL (1984)
Valve Body: Customer Interest
A/T - No Upshift Condition After Downshift
SUBJECT
NO UPSHIFT CONDITION AFTER DOWNSHIFT
NUMBER: 86-T-21A
1984-86 CUTLASS SUPREME, DELTA 88,
DATE: April 22,1986
NINETY-EIGHT WITH 200C or 200-4R
MODELS/YEARS
TRANSMISSIONS AND 1984-85 TORONADO
SECTION: 7A
WITH 325-4L TRANSMISSIONS
This bulletin supercedes Dealer Technical Bulletin 86-T-21 dated March 3,1986..
A 1984 through 1986 THM 200C, THM 200-4R or 1984-1985 THM 325-4L transmission may exhibit a no upshift condition after a part or full-throttle
downshift.
This condition may be caused by internal leakage hydraulically locking the throttle valve plunger. If this occurs, the line pressure remains at a boosted
level resulting in a no upshift condition.
FIGURE 1 - THM 200-4R TRANSMISSION NAMEPLATE
FIGURE 2 - THM 325-4L TRANSMISSION NAMEPLATE
