Standard Ignition US-329L Ignition Lock Cylinder

Ignition Lock Cylinder for OE-Style Replacement

The Standard Ignition US-329L ignition lock cylinder is built for direct replacement on select GM vehicles with thumbwheel-style ignition systems. It uses coded keying, brass tumblers, chrome-plated brass keys, and a die-cast zinc lock core to match original fit and restore reliable key operation.

Compatible With 1999-2007 Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn applications listed below, this ignition lock cylinder is a practical service part for worn, sticking, or non-functioning ignition locks. The US-329L is supplied with instructions and is keyed for technician-focused installation.

Key Features

• Coded ignition lock cylinder for direct replacement service
• Solid brass tumblers for consistent key engagement
• Chrome-plated brass keys and die-cast zinc lock core
• Instructions included for installation support
• Mounts in the steering column
• Standard Ignition US-329L for select GM thumbwheel applications

Detailed Product Overview

Standard Ignition US-329L is engineered to match the original lock cylinder profile for precision installation. It is designed around the needs of technicians working on ignition lock failures caused by wear, key mismatch, or internal cylinder damage. This part cross-references Dorman OE Solutions 924-895 for the same application.

Fits 2005-2007 Buick Terraza, column mount, w/ Thumbwheel; Anti-Theft Computer Requires Reprogramming Procedure With Installation. Fits 2004-2006 Chevrolet Tahoe, column mount, w/ Thumbwheel. Fits 2005-2006 Saturn Relay, column mount, Thumbwheel Type; Anti-Theft Computer Requires Reprogramming Procedure With Installation. Fits 2005 Chevrolet Silverado 2500, column mount, w/ Thumbwheel. Fits 2005 Pontiac Montana, column mount, Thumbwheel Type. Fits 1999-2004 Oldsmobile Silhouette, column mount, Anti-Theft Computer Requires Reprogramming Procedure With Installation. Fits 1999-2004 Pontiac Montana, column mount, Thumbwheel Type; Anti-Theft Computer Requires Reprogramming Procedure With Installation. Fits 2003 Chevrolet Tahoe, column mount, w/ Thumbwheel; Export. Fits 2000-2003 Pontiac Grand Prix, column mount, Anti-Theft Computer Requires Reprogramming Procedure With Installation.

Common Problems This Part Can Address

• Worn ignition cylinder that no longer turns smoothly
• Key binding or inconsistent key engagement
• Broken or damaged internal lock components
• Ignition lock replacement after theft-related or wear-related failure
• Restoration of proper key-to-cylinder operation on thumbwheel systems

Installation Notes and Tips

• Verify the vehicle uses the thumbwheel or thumbwheel-type ignition configuration before ordering.
• Some listed applications require anti-theft computer reprogramming after installation.
• Mounting bracket(s) are not included.
• Follow the included instructions and confirm column-mounted fitment before disassembly.
• Use the vehicle identification and application notes to confirm the correct US-329L match.

Quality Assurance

Standard Ignition builds this lock cylinder with brass tumblers, plated brass keys, and a zinc core to support dependable operation and OE-style fit. The brand’s long-running focus on ignition service parts is reflected in the design of the US-329L for original-equipment replacement needs.