Squeaky leaf spring

tkocurek64

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The driver side leaf spring squeaks on any little bump or hole.

Is it the bushing or something in the leaf pack?:wookie:
 

dirtyoldman

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If it was me I'd squirt some WD40 between all leafs,if it quiets it down you have your answer.If it doesn't apply the WD40 to the bushings.

Maybe some PB Blaster will work :dunno:
 

Zembonez

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Cycle chain lube works great for squeaky leaf springs. Typically, they just get dirt and grit between the leafs... clean them the best you can at a handheld car wash and spray the chain lube between the leafs. Helps if you can put a floor jack under the frame and lift it so the leafs have some gap in them too.
 

That Crazy Squirrel

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Could also be a body bushing. I have one on my truck that squeaks at certain temperatures.
 

tkocurek64

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07 silverado 2500hd classic


That pb blaster is good stuff. I haven't tried that yet



I've heard it could be a body bushing.
 

Draenor

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Subject: Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)


Models: 1999-2007 Chevrolet Silverado (Classic)

2007-2012 Chevrolet Colorado, Silverado

1999-2007 GMC Sierra (Classic)

2007-2012 GMC Canyon, Sierra

2007-2010 HUMMER H3, H3T

This bulletin is being revised to add the 2012 model year. Please discard Corporate Bulletin Number 06-03-09-004C (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.

Posted Image
Posted Image


Note: Ensure any tool used to gently pry the tip inserts or spring leaves is protected to prevent damage to the spring leaves.


5. Apply a liberal amount of grease, P/N♦12345996 (in Canada, use P/N♦10953501), both underneath and on top of the front and rear tip inserts for the #2 and #3 leaves, as indicated below. A screwdriver can be used to gently pry up the tip insert; however, a rag around the screwdriver must be used to prevent damage to the spring. Use a flat-bladed tool, such as a gasket scraper to properly distribute the grease.


6. Lower the vehicle to the ground and test drive to verify the repair.

Please inform the customer that this will offer relief, but is not a lifetime repair. Periodic cleanings and grease re-application may be necessary throughout the life of the vehicle.
For 1500 Series (½ ton) models only: On vehicles built prior to October 2004, if the above procedure does not correct this noise, it could be caused by an incorrectly dimensioned splay clip (the band holding the ends of the leafs together) that interferes with the leaf springs. A 5♦mm (0.197♦in) wider splay clip was introduced in early 2005 model year to provide additional clearance. To correct this concern, replace the rear leaf spring assembly. There was no change to the part number.
Parts Information


Part Number



Description



Qty



12345996

(in Canada, use 10953501)

Lubricant

1

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation



Description



Labor Time



E9437*

Lubricate Rear Leaf Springs-LD

0.5♦hr

Lubricate Rear Leaf Springs-HD

0.9♦hr

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

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
 

Alljackedup408

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I had a squeaky spring on my old silverado... every 6 months or so it would return... used a little WD40 and away the sound went. lol.
 

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