GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Envoy - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.2L 🢒 Timing Chain Tensioner Removal

    Object Number: 637770 Size: SH
  1. Remove the cylinder head access hole plugs.

    2. Object Number: 637584 Size: SH
  2. Remove the timing chain tensioner shoe bolt.
  3. Remove the timing chain tensioner shoe.

    4. Object Number: 637585 Size: SH
  4. Remove the timing chain tensioner guide bolts.
  5. Remove the timing chain tensioner guide.

    6. Object Number: 637580 Size: SH
  6. Remove the timing chain tensioner bolts.
  7. Remove the timing chain tensioner.