Silverado 2500 4WD V8-6.6L DSL Turbo (2010)
Suspension Spring ( Coil / Leaf ): All Technical Service Bulletins
Suspension - Squeak Noise from Rear of Vehicle
TECHNICAL
Bulletin No.: 06-03-09-004C
Date: November 11, 2010
Subject: Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)
Models:
1999-2007 Chevrolet Silverado (Classic)
2007-2011 Chevrolet Colorado, Silverado
1999-2007 GMC Sierra (Classic)
2007-2011 GMC Canyon, Sierra
2007-2010 HUMMER H3, H3T
Supercede:
This bulletin is being revised to add the 2011 model year and update the Warranty Information. Please discard Corporate Bulletin Number
06-03-09-004B (Section 03 - Suspension).
Condition
Some customers may comment about a squeak noise coming from the rear of the vehicle. During normal operation, certain vehicles may exhibit a
squeaking noise that may be traced to the rear leaf springs. While this noise is an operating characteristic of leaf springs, the frequency and severity of
this noise will be affected by the roads that the vehicle is driven on.
Cause
This condition may be due to debris getting between the leaf springs.
Correction
To correct this condition, lubricate the rear leaf springs using the following procedure.
Important
It has been found that the application of grease to the rear leaf springs does a better job of preventing the noise from reoccurring than
replacement of the spring.
1. Raise the vehicle on a frame lift-type hoist.
2. Inspect the springs for damage. If none is found, proceed to the next step.
3. Pressure wash the rear leaf springs to remove as much dirt and grit as possible.
4. Dry the springs with compressed air.
Note
Ensure any tool used to gently pry the tip inserts or spring leaves is protected to prevent damage to the spring leaves.