Suspension - Front End Grunt/Creak/Squeak On Bumps

TSB 11-10-17

10/20/11

GRUNT/CREAK/CHIRP/SQUEAK NOISE FROM THE
FRONT LOWER CONTROL ARM OVER BUMPS -
BUILT ON OR BEFORE 8/1/2011

FORD:
2011-2012 Mustang

The article supersedes TSB 11-7-8 to update the production fix date and Part List.

ISSUE
Some 2011-2012 Mustangs vehicles built on or before 8/1/2011 may exhibit a grunt/creak/chirp/squeak noise from the front lower control arm hydro bushing. These noises may occur over large vertical bumps like speed bumps, pot holes, rough roads and driveway approaches.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

1. Use chassis ears on the lower control arm hydro bushing bracket tabs to verify noise is coming from the hydro bushing. The hydro bushing is the large diameter bushing at the rear of the control arm.

a. If the noise is not confirmed as coming from the hydro bushing, do not continue with this article. Refer to Workshop Manual, Section 204-00 for normal diagnostics.

b. If the noise is confirmed as coming from the hydro bushing, replace the lower control arm that is making the noise. Refer to WSM Section 204-01.





Parts Block

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME

111017A 2011-2012 Mustang: 1.2 Hrs.
Replace One (1) Lower
Control Arm, Includes Time
To Diagnose (Do Not Use
With Any Other Labor
Operations)

111017B 2011-2012 Mustang: 1.6 Hrs.
Replace Two (2) Lower
Control Arms, Includes
Time To Diagnose (Do Not
Use With Any Other Labor
Operations)

DEALER CODING
CONDITION
BASIC PART NO. CODE
3078 42





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