Installing DRLs on your 2003 Chevy Suburban is a straightforward process that boosts safety and aesthetics. With the right tools and a reliable DRL kit, you can complete this upgrade in a few hours, enhancing your vehicle's functionality and style. Adding daytime running lights (DRLs) to your 2003 Chevy Suburban is a great way to enhance safety and improve the vehicle's appearance. DRLs increase visibility during daylight hours, making your vehicle more noticeable to other drivers. Here's a step-by-step guide to installing DRLs on your 2003 Suburban.