Suspension - Rear Leaf Spring Slap Or Clunk Noise
TECHNICALBulletin No.: 03-03-09-002E
Date: June 28, 2011
Subject: Rear Leaf Spring Slap or Clunk Noise (Replace Spring Inserts)
Models:
1999-2012 Chevrolet Silverado 1500/2500
2000-2012 Chevrolet Suburban 2500
2002-2006 Chevrolet Avalanche 2500
2003-2012 Chevrolet Express 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y)
1999-2012 GMC Sierra 1500/2500
2000-2012 GMC Yukon XL 2500
2003-2012 GMC Savana 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y)
Supercede:
This bulletin is being revised to add the 2012 model year and update to the Warranty Information. Please discard Corporate Bulletin Number 03-03-09-002D (Section 03 - Suspension).
Condition
Some customers may comment on a rear leaf spring slap or clunk noise. This noise is most apparent when the vehicle is operated over irregular road surfaces.
Cause
The rear leaf spring tip inserts may have broken apart from wear and fallen out, or may be severely worn or damaged.
Correction
Important
DO NOT disassemble the main pack on the leaf spring or remove the bushing from the spring.
Heavy Duty Spring
Light Duty Spring
Verify that the rear leaf spring tip inserts (1) are present on the leading and trailing ends of the overload spring (second stage leaf), and inspect the condition of the inserts. If the inserts are either not present or severely worn or damaged, install new inserts.
Important
On some models, the vehicle may have to be raised to allow the springs to separate enough so the insert can be installed.
Note
Vehicles originally equipped with all plastic (1) or plastic and rubber (2) design tip inserts can be serviced by all rubber (3) updated design inserts.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer