GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.2L 🢒 Engine Front Cover Installation

Special Tools

J 44219 Engine Cover Alignment Pins

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1257819 Size: SH
  1. Install the engine front cover spacer bolt. Tighten the engine front cover spacer bolt to 10 N·m (89 lb in).
  2. Install the crankshaft balancer friction washer GM P/N 12573950 over the crankshaft snout, up against the crankshaft gear.

    3. Object Number: 748331 Size: SH
  3. Install J 44219 pins .

    4. Object Number: 637780 Size: SH

    Note: The engine front cover must be installed within 10 minutes from when the sealer was applied.

  4. Apply a 3 mm (0.12 in) bead of sealer GM P/N 12378521, Canadian P/N 88901148 to the back side of the engine front cover (1).

    5. Object Number: 1530223 Size: SH
  5. Align the oil pump to the crankshaft sprocket splines.
  6. Install the engine front cover.
  7. Remove J 44219 pins .
  8. Install the engine front cover bolts.
    9. 8.1. Tighten the engine front cover bolts to 10 N·m (89 lb in).
    8.2. Tighten the small center bolt (1) last to 10 N·m (89 lb in).