Camshaft Timing Chain and Sprocket Cleaning and Inspection (L26)
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Aligning Timing Chain & Sprocket Timing Marks
Courtesy of GENERAL MOTORS CORP.
Inspect the timing chain and sprockets for damage.
Inspect the timing chain for overall in and out movement. Movement should not exceed 25 mm (1 in).