Removal ProcedureRemove the primary camshaft drive chain tensioner. Refer toPrimary Camshaft Intermediate Drive Chain Tensioner Replacement.

Remove the primary camshaft drive chain lower guidebolts.Remove the primary camshaft drive chain lower guide.Installation Procedure

Position the primary camshaft drive chain lower guide to theoil pump.
Caution:Refer toFastener Caution.
Install the primary camshaft drive chain lower guide boltsand tighten to25-Y(18-lb-ft).Install the primary camshaft drive chain tensioner. Refer toPrimary Camshaft Intermediate Drive Chain Tensioner Replacement.
Oil Pump Suction Pipe and Screen Assembly Replacement Engine Lubrication Oil Pump
Secondary Timing Chain Guide Replacement - Right Side Valvetrain Valvetrain Timing Timing Belt/ChainDiagnostics
By monitoring and reporting on the
vehicle's key systems, OnStar
Advanced Diagnostics provides a
way to keep up on maintenance.
Capabilities vary by model. See
www.onstar.com for details and
system limitations. Message and
data rates may apply. Advanced
Diagnostics requires an active
OnSt ...