A/T - Shudder in Reverse Condition

91chevy01

Number: 86-47


Section: 7C


Date: Mar., 1986


Subject: THM 700-R4 TRANSMISSION -
SHUDDER IN REVERSE CONDITION


Model and Year: 1982-86 ALL MODELS WITH
THM 700-R4

THM 700-R4 TRANSMISSION IDENTIFICATION INFORMATION:

TO: ALL CHEVROLET DEALERS


A 1982 through 1986 THM 700-R4 transmission may exhibit a shudder condition that is most noticeable with a medium to heavy throttle apply after reverse gear has been selected. Starting on July 9, 1985, or Julian Date 190 through October 2, 1985, or Julian Date 275 (refer to Figure 1), all 1986 THM 700-R4 transmission models were built using a new spacer plate to correct this reverse shudder condition.


Install this new spacer plate on any 1982 through 1985 or before breakpoint 1986 THM 700-R4 transmission that exhibits the reverse shudder condition.





The chart on Page # 2 indicates new spacer plate part numbers, code identifications, 1986 production Julian dates and 1982 through 1986 transmission model applications for the new spacer plates.


Refer to the appropriate Service Manual for the location of spacer plate idetitifying letter codes and proper removal and installation procedures.