GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1392172  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the radiator assembly. Refer to Radiator Replacement .
  3. Remove the air conditioner condenser. Refer to Condenser Replacement .
  4. Remove the air conditioning (A/C) drive belt. Refer to Air Conditioning Compressor Belt Replacement .
  5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  6. Remove the starter motor to gain access to the engine flywheel. Refer to Starter Motor Replacement .

  7. Object Number: 64275  Size: SH

    Important: 

       • For manual transmission applications, note the position of the crankshaft balancer before removal. The balancer does not use a key or keyway for positioning. Mark or scribe the end of the crankshaft and the balancer before component removal. The crankshaft balancer must be installed to the original position. If replacing the crankshaft balancer, note the location of any existing balance weights, if applicable. Install new balance weights into the new crankshaft balancer, if applicable. Crankshaft balancer weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer.
       • Do not use the crankshaft balancer bolt again. Install a NEW crankshaft balancer bolt during final assembly.
       • Ensure that the teeth of the flywheel holding tool mesh with the teeth of the engine flywheel.

  8. Remove the crankshaft balancer. Refer to Crankshaft Balancer Removal .
  9. Clean and inspect the crankshaft balancer. Refer to Crankshaft Balancer Cleaning and Inspection .

Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

Important: 

   • Note the position of the crankshaft balancer before removal, on manual transmission applications. The balancer does not use a key or keyway for positioning. Mark or scribe the end of the crankshaft and the balancer before removal. The crankshaft balancer must be installed to the original position. If replacing the crankshaft balancer, note the location of any existing balance weights, if applicable. Install new balance weights into the new crankshaft balancer, if applicable. Crankshaft balancer weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer.
        The crankshaft balancer installation and bolt tightening involves a 4 stage tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third and fourth passes tighten the new bolt to the proper torque.
        The used crankshaft balancer bolt will be used only during the first pass of the balancer installation procedure. Install a NEW crankshaft balancer bolt and tighten as described in the second, third and fourth passes of the balancer bolt tightening procedure.
   • Ensure the teeth of the tool engage the engine flywheel teeth.

Important: 

   • Align the scribe mark on the balancer with the scribe mark on the crankshaft.
   • The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.


    Object Number: 64275  Size: SH
  1. Install the crankshaft balancer. Refer to Crankshaft Balancer Installation .
  2. Install the starter motor. Refer to Starter Motor Replacement .

  3. Object Number: 1392172  Size: SH
  4. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement .
  5. Install the A/C condenser. Refer to Condenser Replacement .
  6. Install the radiator assembly. Refer to Radiator Replacement .
  7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .