K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Drive/Propeller Shaft: Customer Interest
Drive Shaft - Acceleration Launch Shudder
File In Section: 04 - Driveline Axle
Bulletin No.: 01-04-17-001B
Date: March, 2002
TECHNICAL
Subject:
Launch Shudder On Acceleration
(Install New One-Piece Propeller Shaft)
Models:
1999-2002 Chevrolet and GMC K2500/3500
Extended Cab Long Box and Crew
Cab Short Box Pickup Models
With Automatic Transmission
This bulletin is being revised to add model information, remove procedure steps and change parts information. Please discard Corporate Bulletin
Number 01-04-17-001A (Section 04 - Driveline Axle).
Condition
Some customers may comment on a vibration during acceleration from 0-40 km/h (0-25 mph). This may also be referred to as launch shudder. This
condition may be more noticeable when the vehicle is carrying cargo or is used for towing.
Correction
A new propeller shaft is available for service to correct this condition. This new propeller shaft is a one-piece design and will replace the current
two-piece design.
Install a new one-piece propeller shaft on affected vehicles. Refer to the service procedure and the pans information listed below. Match the affected
vehicle with the appropriate propeller shaft. Refer to the usage information below. This fix does not apply to the Chassis/Crew Cab Models (K35943).
1.
Remove the propeller shaft assembly and the center bearing. Refer to the Propeller Shaft - Two Piece procedure in the Propeller Shaft sub-section
of 512000. For this bulletin, it is not necessary to mark the components for re-assembly.
Center Bearing Support Bracket
Important:
The center bearing support bracket (1) must be removed in order to provide enough clearance for installation of the one-piece propeller shaft. Avoid
damaging the crossmember during removal of the center bracket. For proper clearance, no more than 13 mm (1/2 in) of the bracket may remain on
the crossmember after removal.