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For 1990-2009 cars only

Boom Noise or Vibration (Rotate/Reinstall Front Propeller Shaft to Axle)

Subject:Boom Noise Or Vibration (Rotate/Reinstall Front Propeller Shaft To Axle)

Models:2003 Chevrolet Express 1500/2500 Series AWD Vans
2003 GMC Savana 1500/2500 Series AWD Vans



Condition

Some customers may comment on a boom noise or a vibration.

Cause

The front propeller shaft may not be seated in the pinion flange.

Correction

Rotate the propeller shaft and inspect the U-joint bearing cap for proper installation to the pinion flange.

If installed improperly, there will be a slight gap between the pinion flange and the U-joint bearing cap.

  1. Remove the propeller shaft retaining bolts and clamps from the pinion flange.
  2. Remove the propeller shaft from the pinion flange.
  3. Install the propeller shaft so that the bearing cap is fully seated against the pinion flange.
  4. Install the propeller shaft retaining bolts and clamps.
  5. Tighten
    Tighten the bolts to 45 N·m (33 lb ft).

Warranty Information

For vehicles repaired under warranty , use:

Labor Operation

Description

Labor Time

*F0015

Propeller Shaft - Alignment

0.2 hr

Add

To properly install front propeller shaft

0.2 hr

*This is a unique labor operation number for use only with this bulletin. The number will not be published in the Labor Time Guide.