GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2026591  Size: SH
  1. Remove the 2 secondary timing chain tensioner bolts (3).
  2. Remove the secondary timing chain tensioner (1).
  3. Remove the secondary timing chain tensioner gasket (2).
  4. Inspect the secondary timing chain tensioner mounting surface on the cylinder head for burrs or any defects that would degrade the sealing of the NEW right secondary camshaft drive chain tensioner gasket.