The recommended brake fluid listed by the manufacturer for the 2009 Chevy Silverado is Dot 4. The cost for replacement brake fluid will range from $5 - $15 depending on the brand and quality of the fluid. The service interval recommended by the factory specs is every 30,000 miles. IF You take the truck to a auto service shop the cost will range from $80 - $120 with the labor and parts included. Normal brake operation is the most frequent cause that needs flushing and bleeding brake fluid. However a flush and bleed service can be performed if the fluid is noted to be excessively aged, filthy, and dangerous to rubber braking system components. Even this service will be completed in order to expel air from the device when there is a brake fluid leak.
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