Dorman 42548 Windshield Wiper Arm - Front Left

Dorman 42548 Front Left Wiper Arm

This Dorman windshield wiper arm is a specific-fit replacement for select Chevrolet and GMC trucks and SUVs. It is built to match the original arm’s fit and function, with a black finish and integrated spray nozzle for the front left position.

• Specific-fit windshield wiper arm for the front left side
• Designed to match OE fit and function on listed vehicles
• Black construction with plastic, rubber, and steel materials
• Hook-style wiper end with spine / flange nut attachment
• Includes spray nozzle for washer system operation
• Length: 21.02 in.
• Part number: 42548

OE-Style Replacement Details

Dorman 42548 is engineered as a direct replacement for the original front left wiper arm on select Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, and Yukon applications. It is built for reliable operation and proper windshield contact, helping restore consistent wipe performance on vehicles such as the Chevrolet Silverado 1500 and GMC Sierra 1500. This part cross-references OE number 12487597 for the same application.

Vehicle Fitment

• Fits 1999-2002 Chevrolet Silverado 1500, front left, includes washer nozzle.
• Fits 2001-2002 Chevrolet Silverado 1500 HD, front left, includes washer nozzle.
• Fits 1999-2002 Chevrolet Silverado 2500, front left, includes washer nozzle.
• Fits 2001-2002 Chevrolet Silverado 2500 HD, front left, includes washer nozzle.
• Fits 2001-2002 Chevrolet Silverado 3500, front left, includes washer nozzle.
• Fits 2000-2002 Chevrolet Suburban 1500, front left, includes washer nozzle.
• Fits 2000-2002 Chevrolet Suburban 2500, front left, includes washer nozzle.
• Fits 2000-2002 Chevrolet Tahoe, front left, includes washer nozzle.
• Fits 1999-2002 GMC Sierra 1500, front left, includes washer nozzle.
• Fits 2001-2002 GMC Sierra 1500 HD, front left, includes washer nozzle.
• Fits 1999-2002 GMC Sierra 2500, front left, includes washer nozzle.
• Fits 2001-2002 GMC Sierra 2500 HD, front left, includes washer nozzle.
• Fits 2001-2002 GMC Sierra 3500, front left, includes washer nozzle.
• Fits 2000-2002 GMC Yukon, front left, includes washer nozzle.
• Fits 2000-2002 GMC Yukon XL 1500, front left, includes washer nozzle.
• Fits 2000-2002 GMC Yukon XL 2500, front left, includes washer nozzle.

What This Wiper Arm Helps Address

• Uneven or incomplete windshield wiping on the driver-side front position
• Loss of washer spray at the wiper arm nozzle
• Wiper arm wear, corrosion, or damage from age and road exposure
• Poor blade contact caused by a weakened or bent arm
• Restoring proper operation on a worn OE front left assembly

Installation Notes

Verify the vehicle’s front left application before installation and confirm the hook-style blade connection and spine / flange nut attachment match the original setup. Transfer or align the washer nozzle as required by the vehicle configuration, and inspect the wiper linkage and blade condition before returning the vehicle to service. Part number 42548 is a specific-fit replacement, so matching the listed year, make, model, and position is important.

Quality Assurance

Dorman designs this wiper arm to match the original part’s fit and function on the listed vehicles. The construction combines plastic, rubber, and steel materials for dependable service in the front left wiper position.