RLB-HILON Windshield Wiper Cowl End Cap Panels for Chevy GMC Cadillac 1 Pair (Left & Right) — Direct-Fit OEM Replacement

RLB-HILON 1Pair windshield wiper cowl end cap panels are replacement left and right covers designed to restore the fit and finish at the base of the windshield for select Chevrolet, GMC and Cadillac trucks and SUVs.

These two-piece cowl end caps are engineered as direct-fit replacements for worn, cracked or missing original panels. They match the OEM mounting points (OEM numbers 15287177 and 15287178) and are compatible with many late‑1990s to mid‑2000s GM full‑size vehicles, helping maintain proper water diversion and the vehicle’s exterior appearance. Each order includes one pair—left and right—ready for bolt-on installation with factory-style attachment locations.

Which models and years will these cowl end caps fit?

These panels are made to fit a range of Chevrolet, GMC and Cadillac models from the late 1990s through the mid‑2000s. Cross-referenced to the OEM part numbers, they cover the most common full-size truck and SUV platforms of that era.

• Chevrolet Silverado: 1999–2007
• Chevrolet Avalanche: 2002–2006
• Chevrolet Suburban and Tahoe: 2002–2006
• Cadillac Escalade: 2002–2006
• GMC Sierra: 1999–2007; Yukon and Yukon XL: 2002–2006

How do these replacement end caps restore function and appearance?

Replacing damaged cowl end caps prevents water from entering the wiper cavity and engine bay while returning a clean, factory-like look to the windshield base. Properly seated end caps also help wipers operate without interference and keep debris from collecting in the gaps.

• Direct-fit design matches OEM mounting points for secure attachment.
• Pair includes both left and right caps for a complete visual repair.
• Restores water diversion around the wiper assembly to reduce leaks.
• Improves curb appeal by covering cracked or broken original pieces.

What should I know about installation and compatibility checks?

Installation is straightforward for anyone comfortable with basic exterior trim work; the panels align with factory holes and fasteners. Before purchasing, confirm your vehicle year and model against the listed fitment to ensure correct fit and avoid returns.

• Verify OEM numbers 15287177 and 15287178 when comparing parts.
• Installation typically requires simple hand tools and takes under an hour per side for experienced DIYers.
• Check for any hidden clips or seal remnants on the vehicle and remove them before fitting the new panels.
• Paint or color-matching may be needed if you require OEM color coordination.

Are these panels an OEM part or aftermarket replacement?

These RLB-HILON panels are aftermarket replacements designed to meet OEM fit and function, offering a cost-effective way to repair damaged cowl areas. They are manufactured to align with the same mounting geometry used by the original parts referenced by the OEM numbers.

• Aftermarket product built to match factory dimensions and mounting points.
• Sold as a left/right pair for full coverage of the windshield base.
• May be painted or trimmed to match specific vehicle finishes if desired.
• Provides a budget-friendly alternative to dealer pricing for the same repair.

Who is this for: These RLB-HILON cowl end cap panels are intended for owners and technicians working on Chevy, GMC or Cadillac full‑size trucks and SUVs from the model years listed who need a reliable, direct-fit repair for deteriorated or missing windshield cowl end pieces. They suit DIY mechanics, body shops, and fleet maintenance teams seeking a practical replacement that restores water management and the vehicle’s outward appearance without expensive dealer sourcing.