C 3500 Truck 2WD V8-454 7.4L (1990)
Figure 2
The only way to identify the new low and reverse clutch support is to measure its thickness with a micrometer. (See Figure 2.)
The new low and reverse clutch support and selective plates may be used to service some past model year transmissions if:
-
Transmission was built after February 9, 1987 (Julian Date 040).
NOTICE:
The SELECTIVE PLATES are not interchangeable between the previous clutch support and the new clutch support. If selective plates
are installed in the wrong clutch assembly, durability of the low and reverse clutch will be reduced.
NEW LOW AND REVERSE CLUTCH ASSEMBLY:
PREVIOUS LOW AND REVERSE CLUTCH ASSEMBLY:
Parts are currently available from GMSPO.
Refer to the HYDRA-MATIC 4L60/THM 700-R4 Automatic Transmission Unit Repair section of the appropriate Service Manual for removal and
