R 3500 P/U 2WD V8-379 6.2L DSL (1988)
Wiper Blade: Customer Interest
Wiper Blades - Chattering and Poor Wipeability
GMC NUMBER:
91-8D-39
GROUP:
8D Windshield Wiper/Washer System
DATE:
December, 1990
CORPORATE
NUMBER:
031066
SUBJECT:
CHATTERING WIPER BLADES OR BLADE WIPEABILITY
MODELS:
1991 AND PRIOR YEARS, LIGHT AND MEDIUM DUTY TRUCKS
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.
