Wiper Blades - Chatter on Windshield

90pontiac22
Bulletin Number: 91-10-8
Reference Number: 031066
Publish Date: 11/90
Subject: CHATTERING WIPER BLADES OR BLADE WIPEABILITY (CLEANING PROCEDURE)

Models

Affected: 1982-1991 ALL MODELS
This bulletin cancels and replaces bulletin 87-10-4 issued 10/86. Please discard bulletin 87-10-4.

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, car wax 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.