Standard Ignition US-227LK Ignition Lock Cylinder

Ignition Lock Cylinder for GM Trucks and SUVs

Standard Ignition US-227LK is a coded ignition lock cylinder built for column-mounted applications on a wide range of Chevrolet and GMC trucks, vans, and SUVs. It is engineered for direct replacement service where the original ignition lock has worn, bound up, or stopped turning smoothly.

For technicians and DIY repairs on Chevrolet C1500, GMC Yukon, and related GM platforms, this ignition lock cylinder is matched for precision installation and consistent key operation.

Key Features

• Coded ignition lock cylinder for column mounting
• Precision-matched to original equipment dimensions
• Solid brass tumblers for dependable key engagement
• Chrome plated brass keys included
• Die-cast zinc lock core construction
• Instructions included for service installation
• Compatible with anti-theft service procedures on select applications

Detailed Description

Standard Ignition US-227LK is designed as a direct ignition lock cylinder replacement for GM vehicles that use a column-mounted lock assembly. The coded design supports proper key matching, while the brass tumbler and zinc core construction are selected for stable operation in daily use. This part number is commonly searched for Chevrolet C1500 ignition lock cylinder replacement, GMC Yukon ignition lock cylinder service, and similar GM column ignition repairs.

This part cross-references Dorman - OE Solutions 924-723 for the same application. It also serves as a replacement option for vehicles such as the Chevrolet Silverado, GMC Savana, and Chevrolet Tahoe where the listed fitment matches the original lock cylinder configuration.

What It Helps Fix

• Ignition key that sticks or turns with resistance
• Worn lock cylinder tumblers causing inconsistent key feel
• Broken or damaged ignition lock core
• Loss of proper key-to-cylinder matching
• Column ignition service needs on GM trucks, vans, and SUVs

Installation Notes and Tips

Compatible With 1998-2000 Chevrolet C1500, column; 1998-2000 Chevrolet C2500, column; 1998-2000 Chevrolet C3500, column; 1998-2000 Chevrolet K2500, column; 1998-2000 Chevrolet K3500, column; 1999-2000 GMC Yukon, column; 1998-1999 Chevrolet Silverado, column; and other listed GM applications. Additional fitment includes 1998 Chevrolet Astro, 1998 Chevrolet Blazer, 1998 Chevrolet Express 1500/2500/3500, 1998 Chevrolet Tahoe, 1998 Oldsmobile Bravada, and select GMC Savana, Safari, Jimmy, and Suburban models.

Review the vehicle service manual before installation, especially on applications that note anti-theft system repair instructions. Confirm the original column-mounted lock cylinder style and follow the included instructions during replacement.

Quality Assurance

Standard Ignition builds this lock cylinder with materials selected for service durability, including brass tumblers, plated brass keys, and a zinc lock core. The design reflects long-term OE replacement development focused on correcting common failure points in original ignition locks.