TechPro GM1320355 Door Mirror Set - Left

Left Door Mirror Set for Silverado and Sierra

Restore clear rearward visibility with this TechPro left door mirror set, part number GM1320355. It is built for power mirror applications with a turn signal and manual fold-and-extend function, making it a direct-fit replacement for select Chevrolet Silverado and GMC Sierra trucks.

Fits 2003-2006 Chevrolet Silverado 1500, left; Fits 2003-2006 Chevrolet Silverado 2500 HD, left; Fits 2003-2006 Chevrolet Silverado 3500, left; Fits 2003-2006 GMC Sierra 1500, left; Fits 2003-2006 GMC Sierra 2500 HD, left; Fits 2003-2006 GMC Sierra 3500, left; Fits 2007 Chevrolet Silverado 1500 Classic, left; Fits 2007 Chevrolet Silverado 2500 HD Classic, left; Fits 2007 Chevrolet Silverado 3500 Classic, left; Fits 2007 GMC Sierra 1500 Classic, left; Fits 2007 GMC Sierra 2500 HD Classic, left; Fits 2007 GMC Sierra 3500 Classic, left; Fits 2003-2004 Chevrolet Silverado 2500, left; Fits 2003-2004 GMC Sierra 2500, left.

• Power-adjustable left door mirror assembly
• Integrated turn signal for improved visibility signaling
• Manual fold and extend function
• Factory-style precision for OE-style fitment
• Built with high-quality materials for durability and long-term performance
• Part number GM1320355 for easy identification

Detailed Product Overview

TechPro GM1320355 is a left side door mirror set for Chevrolet Silverado and GMC Sierra trucks equipped with power adjustment, a turn signal, and manual fold/extend operation. It is engineered for factory-style fit and dependable daily use, with dimensions of 7.85 inches high, 20.84 inches long, and 13.45 inches wide. This mirror assembly is a practical replacement for worn, damaged, or non-functioning OE units on Silverado and Sierra models, including Silverado 1500, Silverado 2500 HD, Silverado 3500, Sierra 1500, Sierra 2500 HD, and Sierra 3500 applications. This part number GM1320355 also cross-references OEM 15904034 for the same application.

Common Problems This Part Can Address

• Broken or cracked driver-side mirror housing
• Failed power mirror adjustment
• Turn signal lens or mirror signal damage
• Loose or worn fold-and-extend mirror operation
• Reduced rear visibility from a damaged mirror assembly

Installation Notes and Tips

Verify the vehicle is equipped with power adjustment, turn signal, and manual fold/extend mirror functions before ordering. Confirm left-side fitment against the OE number 15904034 and match the truck’s year, make, and model exactly. GM1320355 is listed for the driver-side mirror position only, so compare connector style and mirror features with the original assembly before installation.

Quality Assurance

TechPro builds this mirror assembly with high-quality materials and factory-style precision to support durable, consistent performance on compatible Chevrolet Silverado and GMC Sierra trucks. Part number GM1320355 is specified for direct replacement use where OEM 15904034 is listed.