GM Service Manual Online
For 1990-2009 cars only
  1. Inspect the transmission support for excessive wear, damage and/or deformity, accordingly it may change the driveline working angles. If the transmission support exhibit the above signs, the support replacement is necessary.
  2. Inspect the rear axle block absorber for excessive wear, damage and/or deformity, accordingly it may change the driveline working angles. If the rear axle block absorber exhibits the above signs, replacement is necessary.
  3. Inspect the drive shaft support bearing assembly for damaged rubber components, worn bearings or deformed/cracked bracket, accordingly it will affect the driveline working angles. If the supporting bearing assembly exhibit the above signs, replacement is necessary.
  4. Inspect the driveline support bearing assembly for loose or missing gasket. Reinstall correctly or replace an gasket if necessary to ensure proper alignment of the support bearing assembly.
  5. If the U-joint working angle needs adjustment, perform the following steps:
  6. • Add a gasket between support bearing bracket and the bottom of the body to increase the working angels.
    • Add a gasket between support bearing and support bearing bracket to decrease the working angles.