Savana 4500 V8-6.6L DSL Turbo (2009)
Shackle: All Technical Service Bulletins
Suspension - Rear Leaf Spring Noise On Acceleration
TECHNICAL
Bulletin No.: 09-03-09-002A
Date: April 08, 2011
Subject: Noise from Rear Leaf Spring Under Acceleration and High Loads (Replace Rear Leaf Spring Shackle)
Models:
2006-2012 Chevrolet Express
2006-2012 GMC Savana
Commercial Cutaway Vans - G33503, G33803, G33903
Supercede:
This bulletin is being revised to add the 2011 and 2012 model years. Please discard Corporate Bulletin Number 09-03-09-002 (Section 03 - Suspension).
Condition
Some customers may comment on a noise from the rear of the vehicle. Upon Investigation, the technician may find the left and right shackle lower
bushings are worn/ torn. This creates a metal to metal contact.
Correction
1. Verify the condition.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
3. Support the rear axle independently in order to relieve the tension on the leaf springs.
4. Remove the leaf spring (1) to the spring shackle (5) mounting bolt and nut (3). Replace the leaf spring shackle with GM P/N 20773420.
5. Install the leaf spring (1) to the spring shackle (5) mounting bolt and nut (3).
6. Tighten the spring shackle to frame mounting nut.
Tighten
Tighten the nut to 115 Nm (85 lb ft).
7. Tighten the spring shackle to leaf spring mounting nut.
Tighten
Tighten the nut to 85 Nm (63 lb ft).
8. Remove the rear axle support.
9. Repeat the same procedure for the other side.
10. Lower the vehicle.
Parts Information
Warranty Information
