Window Motor - Erratic or Inoperative (Updated Brushes)
89Chevy28Number: 88-429-10
Section: 10
Date: September 1989 931035 Corporate Bulletin No.:
Subject: BRUSH PACKAGE REPLACEMENT FOR WINDOW LIFT MOTORS
Model and Year: 1988 L, Y CARS AND C, K TRUCKS
TO: ALL CHEVROLET DEALERS
THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 88-380-10, DATED DECEMBER 1988. PART NUMBERS HAVE BEEN CHANGED AS WELL AS THE PARTS STATEMENT. ALL COPIES OF 88-380-10 SHOULD BE DISCARDED.
Some 1988 L and Y cars, and C, K trucks may exhibit power window lift motors that start out as intermittent operation and eventually become inoperative. This condition may be due to restricted brushes making intermittent contact with the armature commutator.
New brush replacement packages may be ordered from GMSPO under part number 22094719.
Parts are currently available from GMSPO.
An instruction sheet describing the proper procedures is included in each package. While regulator and motor removal from the door is required, IT IS NOT NECESSARY to remove the motor from the regulator to replace the brushes. It will be necessary to secure the regulator sector gear to the backplate as outlined in the appropriate service manual prior to performing this repair.
Labor Operation Number: N3314 - Right Front
N3315 - Left Front
N3324 - Right Rear
N3325 - Left Rear
Labor Time: Use applicable times for styles involved.