GM Service Manual Online
For 1990-2009 cars only
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Buick
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2007
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Vehicle Diagnostic Information
🢒 Camshaft Timing Chain and Sprocket Cleaning and Inspection
Camshaft Timing Chain and Sprocket Cleaning and Inspection L26
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).
Inspect the sprockets for wear.