GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the spark plugs in order to ease crankshaft/engine rotation. Refer to Spark Plug Replacement.
  2. Remove the engine front cover. Refer to Engine Front Cover Replacement.
  3. Remove the right bank secondary camshaft drive chain. Refer to Secondary Camshaft Drive Chain Removal - Right Side.
  4. Remove the primary camshaft drive chain. Refer to Primary Camshaft Drive Chain Removal.
  5. Remove the left bank secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Removal - Left Side.
  6. Remove the left bank secondary camshaft drive chain shoe. Refer to Secondary Camshaft Drive Chain Shoe Removal - Left Side.
  7. Remove the left bank secondary camshaft drive chain guide. Refer to Secondary Camshaft Drive Chain Guide Removal - Left Side.
  8. Remove the left bank camshaft intermediate drive chain idler. Refer to Camshaft Intermediate Drive Chain Idler Removal - Left Side.

  9. Object Number: 902828  Size: SH
  10. Remove the left bank secondary camshaft drive chain. Refer to Secondary Camshaft Drive Chain Removal - Left Side.
  11. Clean and inspect all of the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection. Replace components as necessary.

Installation Procedure


    Object Number: 902828  Size: SH
  1. Install the left bank secondary camshaft drive chain. Refer to Secondary Camshaft Drive Chain Installation - Left Side.
  2. Install the left bank camshaft intermediate drive chain idler. Refer to Camshaft Intermediate Drive Chain Idler Installation - Left Side.
  3. Install the left bank secondary camshaft drive chain guide. Refer to Secondary Camshaft Drive Chain Guide Installation - Left Side.
  4. Install the left bank secondary camshaft drive chain shoe. Refer to Secondary Camshaft Drive Chain Shoe Installation - Left Side.
  5. Install the left bank secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Installation - Left Side.
  6. Install the primary camshaft drive chain. Refer to Primary Camshaft Drive Chain Installation.
  7. Install the right bank secondary camshaft drive chain. Refer to Secondary Camshaft Drive Chain Installation - Right Side.
  8. Install the engine front cover. Refer to Engine Front Cover Replacement.
  9. Install the spark plugs. Refer to Spark Plug Replacement.