Performance Timing Chain Kit for Chevrolet Avalanche (2003-2007) 5.3L 6.0L

Heavy-Duty Timing Chain Kit for 2003-2007 Chevrolet Avalanche (GMT800/GMT900)

What it Does: The Performance Timing Chain Kit replaces worn, stretched factory timing components on the 2003-2007 Chevrolet Avalanche to eliminate camshaft timing drift, stabilize valve events, and maintain strict ignition synchronization under severe loads.

The Stock Chevrolet Avalanche Timing Chain Slack & Wear Limitation

Factory timing assemblies in high-mileage **GMT800** and early **GMT900** trucks are prone to pin galling and mechanical chain stretch. Over thousands of thermal cycles and heavy towing loads, the factory single-roller chain develops excessive deflection. This mechanical slack creates camshaft timing retard, erratic ignition signals through the camshaft position sensor, sluggish throttle response, and can lead to tooth jumping or catastrophic valve-to-piston interference under sudden load transitions.

The Engineering Solution

This direct-fit timing set utilizes high-tensile, heat-treated alloy steel link plates engineered to resist elongation and cyclic fatigue. Broached to strict tolerances, the matching induction-hardened camshaft and crankshaft sprockets maintain concentricity to suppress torsional vibrations. Engineered specifically for **24X reluctor** **LS-series** architectures, this setup matches the **TS4194A** dimensional standard, securing rock-solid valve timing events across the entire RPM band.

What's Included

• 1 Timing Chain
• 1 Camshaft Sprocket
• 1 Crankshaft Sprocket

Technical Specifications

Compatibility

• 2003-2006 Chevrolet Avalanche 1500 5.3L V8 (24X Reluctor)
• 2003-2006 Chevrolet Avalanche 2500 6.0L V8 (24X Reluctor)
• 2007 Chevrolet Avalanche 5.3L / 6.0L V8 (24X Reluctor configurations only)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT800 and GMT900 Avalanche?

Yes, this is a direct fit for 2003-2007 Chevrolet Avalanche trucks equipped with **5.3L** and **6.0L** **LS-series** engines featuring a **24X reluctor** wheel; it does not fit later Gen IV 58X reluctor configurations.

Why must sprocket tooth counts and chain link counts be confirmed prior to install?

GM transitioned trigger designs during mid-decade production, requiring verification to ensure proper crank sensor calibration and timing indexing.

The Chevrolet Heavy-Duty Standard

Built to handle continuous high-load towing and harsh utilitarian abuse, this timing set delivers the mechanical reliability required to keep your Vortec V8 running with factory-spec valve synchronization.