C 2500 3/4 Ton Pickup 2WD V8-350 5.7L VIN M 4-bbl (1984)
Wiper Blade: Customer Interest
Wiper Blades - Chattering and Poor Wipeability
8D Windshield Wiper/Washer System
CHATTERING WIPER BLADES OR BLADE WIPEABILITY
1991 AND PRIOR YEARS, LIGHT AND MEDIUM DUTY TRUCKS
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.
Clean the windshield glass with GM # 1050011 (Bon Ami) glass cleaner or equivalent.
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
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