Dorman 42790 Wiper Arm - Front Left

Reliable Wiper Arm Replacement for Chevrolet and GMC Trucks

The Dorman 42790 wiper arm is designed specifically for select Chevrolet and GMC truck models, providing a durable and precise fit. Crafted from steel with a matte black finish, this arc-type wiper arm ensures consistent windshield coverage and reliable performance in various weather conditions.

• Constructed from high-quality steel for strength and durability
• Matte black finish resists corrosion and blends with vehicle aesthetics
• 23-inch length with a 170-degree head angle for optimal windshield contact
• Specific fit for Chevrolet Silverado and GMC Sierra models
• Bolt-on attachment method for secure installation
• Articulated arc design enhances wiping efficiency

Durable Steel Construction and Precise Design

The Dorman 42790 wiper arm features a robust steel build that withstands daily wear and exposure to the elements. Its matte finish helps prevent rust and maintains a clean appearance over time. The 23-inch length and 170-degree head angle are engineered to match the original equipment specifications for Chevrolet Silverado 1500, 2500 HD, 3500 HD, and GMC Sierra 1500, 2500 HD, 3500 HD trucks. The articulated arc design allows the wiper arm to maintain consistent pressure across the windshield, improving visibility during rain or snow.

Compatible Chevrolet and GMC Truck Models

• Chevrolet Silverado 1500, 1500 LD, 2500, 2500 HD, 3500, 3500 HD
• GMC Sierra 1500, 1500 Limited, 2500 HD, 3500 HD
• Chevrolet Cheyenne

Common Issues Addressed by This Wiper Arm

• Wiper arm bending or damage from weather exposure
• Poor windshield contact causing streaks or missed spots
• Corrosion or rust on original wiper arm
• Loose or unstable wiper arm attachment
• Incompatibility with replacement blades due to incorrect arm type

Installation Notes and Tips

This wiper arm uses a bolt-on attachment method, matching the original equipment design for a secure fit. Ensure the mounting bolt is properly tightened to avoid movement during operation. No adapters or instruction manual are included, so refer to your vehicle’s service manual for detailed installation guidance. The specific fitment for Chevrolet Silverado and GMC Sierra models helps simplify the replacement process.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. While no specific warranty details are provided here, Dorman typically offers limited warranties on their replacement components. For exact warranty information, consult Dorman’s official documentation or your parts supplier.