Sierra Classic 2500 4WD V8-6.0L (2007)
Wiper Arm: Testing and Inspection
WIPER ARM TIP PRESSURE CHECK
1. Run the wiper arms to the mid-wipe position.
2. Remove the wiper blades from the wiper arms.
3. Attach a scale to the end of the wiper arm and measure the force required to lift the wiper arm perpendicular to the windshield to normal working
height with the blade attached.
4. Replace the wiper arm if the measurement is not within the specification.
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Driver Side - 8.1-9.5 Newtons (29- 34 Ounces)
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Passenger Side - 5.8-7.0 Newtons (21- 25 Ounces)
