About This

• Function:EN-52436 certified tool firmly holds the timing chain during camshaft, actuator, valve spring, or valve stem seal service (per GM specifications). Prevents chain movement when removing components, ensuring safe repair of LSY/L3B engines．
• Correct Installation：Installed before actuator removal, this tool expands into the chain to lock tensioner position　and prevent costly tensioner failure. Must engage as low as possible in the chain (critical step!) to maintain tension at engine’s lower end, preventing tensioner extension and chain jump.
• Fit：Our timing chain tensioner retainer is specifically designed for 2.0L-T/2.7L-T engines: Chevrolet Silverado 2.0LT (RPO LSY), Buick Envision 2.0 LSY, Cadillac XT4 (2019+), and GMC Sierra 2.7LT L3B. Not applicable to other brands/models.
• Materials：Machined from forged alloy steel to withstand repair forces without bending. Includes 2-year warranty against defects (competitors: 90 days). Safety tested to prevent damage to chain links or engine components.
• Instructions for use：Prevents $2,000+ engine damage caused by chain misalignment during service. Detailed instructions included for correct low-position installation. Warning: Generic tools risk incorrect tension.