Depo 335-1147L-AS Headlight Assembly - Left

Left Headlight Assembly for GMC Sierra

This Depo headlight assembly is a left-side exterior lighting replacement for select GMC Sierra trucks. It is built for direct fitment on 2007-2014 GMC Sierra 2500 HD, 2007-2014 GMC Sierra 3500 HD, and 2007-2013 GMC Sierra 1500 applications with composite headlamp configurations.

Key Features

• Brand: Depo
• Part number: 335-1147L-AS
• Left headlight assembly for the driver side
• Composite headlamp design
• OE reference noted in fitment: GM2502283
• OEM reference noted in fitment: 22853029

Fitment Details

• Fits 2007-2014 GMC Sierra 2500 HD, left, composite; GM2502283; OEM: 22853029.
• Fits 2007-2014 GMC Sierra 3500 HD, left, composite; GM2502283; OEM: 22853029.
• Fits 2007-2013 GMC Sierra 1500, left, composite; GM2502283; OEM: 22853029.

Product Description

Depo 335-1147L-AS is a left headlight assembly for GMC Sierra models that use the composite headlamp setup. It is listed for the driver-side position on Sierra 1500, Sierra 2500 HD, and Sierra 3500 HD trucks across the model years shown, making it a direct replacement option when the original left headlamp is damaged, faded, or no longer operating correctly. The part number 335-1147L-AS is also useful when cross-checking catalog listings for the same application.

Common Issues This Part Can Address

• Cracked or broken left headlight housing
• Clouded or worn exterior lighting lens
• Failed or dim headlamp output on the driver side
• Water intrusion into the headlight assembly
• Mismatch after collision repair on a GMC Sierra

Installation Notes and Tips

Verify the vehicle uses the composite headlamp configuration before ordering. Confirm left-side placement and match the OE reference numbers GM2502283 and 22853029 against the existing unit when possible. For a clean result on GMC Sierra 1500, Sierra 2500 HD, or Sierra 3500 HD applications, compare connector style, mounting points, and lamp style before installation.

Quality Assurance

Depo manufactures replacement lighting components for automotive applications, and this headlight assembly is cataloged to match the listed OE references for the specified GMC Sierra fitments. Part number 335-1147L-AS is identified for direct replacement use on the applications shown.