GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 57145  Size: SH
  1. Remove the transmission assembly. Refer to Transaxle Replacement
  2. in Transmission.

  3. Remove two bolts from the left exhaust manifold (3).
  4. Remove the exhaust manifold rear pipe from the right manifold (2).
  5. Remove one bolt securing the crossover pipe to the crankcase.
  6. Remove one bolt securing the crossover pipe to the cylinder head.
  7. Remove the EGR supply tube.
  8. Remove the exhaust crossover pipe.

Installation Procedure


    Object Number: 57145  Size: SH
  1. Install the exhaust crossover pipe (1).
  2. Install the flange and seal to the exhaust manifold rear pipe end of the crossover.
  3. Position the crossover pipe securely leaving the left hand exhaust manifold joint loose.
  4. Install the bolt securing the crossover pipe to cylinder head.
  5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the bolt securing the crossover pipe to the crankcase.
  7. Tighten
    Tighten the crankcase support bolts and cylinder head support bolts to 30 N·m (22 lb ft).

  8. Install the left exhaust manifold to crossover pipe bolts.
  9. Tighten
    Tighten the crossover pipe bolts to 25 N·m (18 lb ft).

  10. Tighten the exhaust downpipe to exhaust crossover pipe.
  11. Install the EGR supply tube.
  12. Tighten
    Tighten the EGR tube-to-crossover pipe nut to 60 N·m (44 lb ft).

  13. Install the transmission assembly. Refer to Transaxle Replacement in Transmission.