A/T - New Calibration Changed TV Limit Line-Up
Number: 92-341-7ASection: 7A
Date: JAN. 1993
Corporate Bulletin No.: 377102
ASE No.: A2
Subject:
NEW CALIBRATION CHANGED TV LIMIT LINE-UP
Model and Year:
1992 CAPRICE, CAMARO, CORVETTE AND 1992 C/K, S/T, G, M/L TRUCKS WITH 4L60 AUTOMATIC TRANSMISSION
SERVICE UPDATE
TRANSMISSION APPLICATIONS:
1992 HYDRA-MATIC 4L60 (MD8)
TRANSMISSION MODELS:
All
SUBJECT:
1992 Service Manual Update Transmission Unit Repair Update (General Information)
VEHICLE APPLICATIONS:
B, F, Y - Cars
C/K, S/T - Trucks
G, M/L - Vans
BULLETIN COVERS:
New Product Information for 1992 HYDRA-MATIC 4L60 transmissions. This information has been updated since publication of the 1992 Service Manual and should be noted accordingly. Be certain to familiarize yourself with these updates to properly repair the 1992 HYDRA-MATIC 4L60 transmission.
DATE OF PRODUCTION CHANGE:
On August 14, 1991 (Julian Date 226), the HYDRA-MATIC 4L60 transmissions were built with a new calibration that changed the TV limit line-up. The changes included a new TV limit valve (Ill. 332), a new TV limit valve spring (Ill. 331), and eliminates the TV limit plug (Ill. 351) Figure 112. Also included is an updated line pressure check chart and an updated 2nd apply piston and housing application chart.
SERVICE MANUAL REFERENCE:
Update your 1992 Service Manual Section 7 Transmission with the three (3) pages which are 7A-15a-6, 7A-15b-50 and 7A-15b-56.