GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Uplander 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Exhaust Crossover Pipe Installation

    Object Number: 1645441 Size: SH

    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.

  1. Install the exhaust crossover pipe studs (1) if necessary.

    2. Tighten
    Tighten the exhaust crossover pipe studs to 25 N·m (18 lb ft).

  2. Install the exhaust crossover pipe.
  3. Install the exhaust crossover pipe nuts.

    4. Tighten
    Tighten the exhaust crossover pipe nuts to 25 N·m (18 lb ft).


    Object Number: 1645439 Size: SH
  4. Install the exhaust crossover heat shield.
  5. Install the exhaust crossover heat shield bolts.

    6. Tighten
    Tighten the exhaust crossover heat shield bolts to 10 N·m (89 lb in).