A/T - Check Procedure and Shift Speed

9214chevy01

Number: 90-77-7A

Section: 7A

Date: October 1989

Corporate Bulletin No.: 977145


Subject: REVISED PRELIMINARY CHECK PROCEDURE AND SHIFT SPEED CHART FOR 1990 4L60/700-R4 TRANSMISSIONS


Model and Year: 1990 PASSENGER CARS WITH 4L60 TRANSMISSION
1990 LIGHT DUTY TRUCKS WITH 4L60 TRANSMISSION


TO: ALL CHEVROLET DEALERS








This bulletin provides a revised Preliminary Check Procedure and Shift Speed Chart for 1990 HM4L60/700-R4 transmissions. These charts have been updated since publication of the 1990 Service Manuals. Please make reference to these changes in your service manuals.