Wiper Blades - Chattering on Windshield

91chevy01

Number: 91-126-8E


Section: 8E

Date: November 1990

Corporate Bulletin No.: 031066


Subject: CHATTERING WIPER BLADES OR BLADE WIPEABILITY


Model and Year: ALL PASSENGER CARS AND TRUCKS


TO: ALL CHEVROLET DEALERS

Condition:


Chattering and poor wipeability comments may be due to the windshield glass and/or wiper blades becoming contaminated by insect residue, dirt, road grime, carwax etc.

Correction:


1. Clean the windshield glass with GM # 1050011 (Bon Ami) glass cleaner or equivalent.


Important: The glass is clean when rinse water does not "bead-up," but "sheets" across the entire glass surface. Multiple cleanings may be required to remove all contaminants.


2. Clean the wiper blades by using a cloth that has been saturated with full strength washer solution and wipe vigorously. Rinse the blades with water after cleaning.