06-08-43-003D Windshield Wiper Performance Cleaning Instructions and Maintenance - (Feb 12 2013) Wipers - part 2
The following are major contributors to wiper damage. Some of these you can controland others are environmental concerns.Extremely dusty areas (such as driving on dirt roads) may cause the wipers rubberedge to wear quickly and unevenly.Sand and salt used on roads for increasing winter traction and ice control will causethe wiper blades to wear quicker. Areas with significant snowfall require more frequentblade replacements.Heat and time may cause the rubber blades to take a “permanent set” resulting in therubber not flexing and turning over uniformly. This condition may result in streakingand/or unwiped areas.Rubber blades are easily cut or torn when using ice scrapers. Likewise pulling bladesup off a frozen windshield can tear the rubber. Exercise caution when clearing iceand snow.Using your wipers to “wear through” frost and ice, instead of allowing the defrostersto melt the ice, can dull, nick or tear the rubber blades.Banging wipers on the glass to remove ice and snow may cause the blade to bend, dislodgingthe rubber and causing potential scratching of the windshield.Ice can form in the pin joints of the wipers, which can cause streaking and unwipedareas. To remove ice from pin joints, compress the blade and rubber edge with yourhand to loosen the frozen joints. Consider using Winter Blades that have a rubber cover to avoid this condition.
Note:GM does not recommend the use of any spray on/wipe on windshield treatments or washerfluid additives. The variation in friction that results on the glass from the useof these products causes wipers to chatter and have premature wear.
GM bulletins are intended for use by professional technicians,NOT a "do-it-yourselfer". They are written to inform thesetechnicians of conditions that may occur on some vehicles, or toprovide information that could assist in the proper service of avehicle. Properly trained technicians have the equipment,tools, safety instructions, and know-how to do a job properly andsafely. If a condition is described, DO NOT assume that thebulletin applies to your vehicle, or that your vehicle will havethat condition. See your GM dealer for information on whetheryour vehicle may benefit from the information.
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