Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2015 and prior GM passenger cars and trucks.

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  2015 and Prior GM Passenger Cars and Trucks

Possible causes

• Most wiper performance concerns come from dirty blades, damaged blades, or worn out blades used beyond their useful life.

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  Most concerns about windshield wiper performance are the result of dirty wiper blades, damaged wiper blades, or worn out blades that are continuing to be used beyond their useful life.

• Heat and time can give the rubber a permanent set so it no longer flexes and turns over uniformly, which may cause streaking or unwiped areas.

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  Heat and time may cause the rubber blades to take a “permanent set” resulting in the rubber not flexing and turning over uniformly. This condition may result in streaking and/or unwiped areas.

• Ice can form in the pin joints of the wipers and cause streaking and unwiped areas.

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  Ice can form in the pin joints of the wipers, which can cause streaking and unwiped areas.

• The variation in friction these products leave on the glass makes the wipers chatter and wear prematurely.

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  The variation in friction that results on the glass from the use of these products causes wipers to chatter and have premature wear.

Steps to confirm (in the document’s order)

• Inspect the rubber blades every 4-6 months or 12,000 km (7,500 mi) for wear, cracking or contamination.

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  Inspect your wipers rubber blades every 4-6 months or 12,000 km (7,500 mi) for wear, cracking or

Repair

1. If the blades do not clear the glass, clean the windshield and the rubber blades; if that does not correct it, replace the rubber elements.

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   Clean the windshield and the rubber wiper blades (using the procedure below) if the blades are not clearing the glass satisfactorily. If this does not correct the problem, then replace the rubber elements.

2. Clean the rubber blades with a lint free cloth or paper towel soaked with windshield washer fluid or a mild detergent.

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   Clean the rubber blades using a lint free cloth or paper towel soaked with windshield washer fluid or a mild detergent.

Parts

• For exterior glass cleaning the bulletin suggests Vehicle Care Glass Cleaner, P/N 19287404 (18 oz) or 19259280 (6 oz) (in Canada, 88865156).

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  suggest Vehicle Care Glass Cleaner, P/N 19287404 (18 oz) or 19259280 (6 oz) (in Canada, 88865156).

Caution

• Do not clean wiper blades with gasoline, kerosene or petroleum based products.

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  Do not use gasoline, kerosene, or petroleum based products to clean wiper blades.

• GM does not recommend spray on / wipe on windshield treatments or washer fluid additives.

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  GM does not recommend the use of any spray on/wipe on windshield treatments or washer fluid additives.