Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 564 (WIPER SYSTEM & WASHER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESWIPER BLADE ELEMENT CHECK
1999 GMC Forward Control 5.7 R, Automatic
Wiper Blade Element Check
1999 GMC Forward Control 5.7 R, AutomaticSECTION Wiper Blade Element Check
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the wiper blades from the wiper arms. Refer to Wiper Arm Blade Replacement .
- Look down the length of the blade element.
- Replace the wiper blade element if the rubber element which contacts the glass is not on the centerline of the blade +/-15 degrees. Refer to Wiper Blade Element Replacement .
- Install the wiper blades on the wiper arms. Refer to Wiper Arm Blade Replacement .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.